DefinedTerm

A Schema.org Type

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Thing > Intangible > DefinedTerm

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Canonical URL: https://schema.org/DefinedTerm
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A word, name, acronym, phrase, etc. with a formal definition. Often used in the context of category or subject classification, glossaries or dictionaries, product or creative work types, etc. Use the name property for the term being defined, use termCode if the term has an alpha-numeric code allocated, use description to provide the definition of the term.

Property	Expected Type	Description
Properties from DefinedTerm
`inDefinedTermSet`	DefinedTermSet or URL	A DefinedTermSet that contains this term.
`termCode`	Text	A code that identifies this DefinedTerm within a DefinedTermSet.
Properties from Thing
`additionalType`	Text or URL	An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. Typically the value is a URI-identified RDF class, and in this case corresponds to the use of rdf:type in RDF. Text values can be used sparingly, for cases where useful information can be added without their being an appropriate schema to reference. In the case of text values, the class label should follow the schema.org style guide.
`alternateName`	Text	An alias for the item.
`description`	Text or TextObject	A description of the item.
`disambiguatingDescription`	Text	A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.
`identifier`	PropertyValue or Text or URL	The identifier property represents any kind of identifier for any kind of Thing, such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See background notes for more details.
`image`	ImageObject or URL	An image of the item. This can be a URL or a fully described ImageObject.
`mainEntityOfPage`	CreativeWork or URL	Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See background notes for details. Inverse property: mainEntity
`name`	Text	The name of the item.
`potentialAction`	Action	Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
`sameAs`	URL	URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website.
`subjectOf`	CreativeWork or Event	A CreativeWork or Event about this Thing. Inverse property: about
`url`	URL	URL of the item.

Instances of DefinedTerm may appear as a value for the following properties

Property	On Types	Description
assesses	CreativeWork or EducationEvent or LearningResource	The item being described is intended to assess the competency or learning outcome defined by the referenced term.
biologicalRole	BioChemEntity	A role played by the BioChemEntity within a biological context.
certificationIdentification	Certification	Identifier of a certification instance (as registered with an independent certification body). Typically this identifier can be used to consult and verify the certification instance. See also gs1:certificationIdentification.
chemicalRole	ChemicalSubstance or MolecularEntity	A role played by the BioChemEntity within a chemical context.
competencyRequired	EducationalOccupationalCredential or LearningResource	Knowledge, skill, ability or personal attribute that must be demonstrated by a person or other entity in order to do something such as earn an Educational Occupational Credential or understand a LearningResource.
creativeWorkStatus	CreativeWork	The status of a creative work in terms of its stage in a lifecycle. Example terms include Incomplete, Draft, Published, Obsolete. Some organizations define a set of terms for the stages of their publication lifecycle.
credentialCategory	EducationalOccupationalCredential	The category or type of credential being described, for example "degree”, “certificate”, “badge”, or more specific term.
educationalLevel	CreativeWork or EducationEvent or EducationalOccupationalCredential or LearningResource	The level in terms of progression through an educational or training context. Examples of educational levels include 'beginner', 'intermediate' or 'advanced', and formal sets of level indicators.
educationalUse	CreativeWork or LearningResource	The purpose of a work in the context of education; for example, 'assignment', 'group work'.
expressedIn	Gene	Tissue, organ, biological sample, etc in which activity of this gene has been observed experimentally. For example brain, digestive system.
financialAidEligible	Course or EducationalOccupationalProgram	A financial aid type or program which students may use to pay for tuition or fees associated with the program.
hasDefinedTerm	DefinedTermSet or Taxon	A Defined Term contained in this term set.
hasMolecularFunction	BioChemEntity	Molecular function performed by this BioChemEntity; please use PropertyValue if you want to include any evidence.
industry	JobPosting	The industry associated with the job position.
isInvolvedInBiologicalProcess	BioChemEntity	Biological process this BioChemEntity is involved in; please use PropertyValue if you want to include any evidence.
isLocatedInSubcellularLocation	BioChemEntity	Subcellular location where this BioChemEntity is located; please use PropertyValue if you want to include any evidence.
jobTitle	Person	The job title of the person (for example, Financial Manager).
keywords	CreativeWork or Event or Organization or Place or Product	Keywords or tags used to describe some item. Multiple textual entries in a keywords list are typically delimited by commas, or by repeating the property.
learningResourceType	CreativeWork or LearningResource	The predominant type or kind characterizing the learning resource. For example, 'presentation', 'handout'.
measurementMethod	DataCatalog or DataDownload or Dataset or Observation or PropertyValue or StatisticalVariable	A subproperty of measurementTechnique that can be used for specifying specific methods, in particular via MeasurementMethodEnum.
measurementTechnique	DataCatalog or DataDownload or Dataset or Observation or PropertyValue or StatisticalVariable	A technique, method or technology used in an Observation, StatisticalVariable or Dataset (or DataDownload, DataCatalog), corresponding to the method used for measuring the corresponding variable(s) (for datasets, described using variableMeasured; for Observation, a StatisticalVariable). Often but not necessarily each variableMeasured will have an explicit representation as (or mapping to) an property such as those defined in Schema.org, or other RDF vocabularies and "knowledge graphs". In that case the subproperty of variableMeasured called measuredProperty is applicable. The measurementTechnique property helps when extra clarification is needed about how a measuredProperty was measured. This is oriented towards scientific and scholarly dataset publication but may have broader applicability; it is not intended as a full representation of measurement, but can often serve as a high level summary for dataset discovery. For example, if variableMeasured is: molecule concentration, measurementTechnique could be: "mass spectrometry" or "nmr spectroscopy" or "colorimetry" or "immunofluorescence". If the variableMeasured is "depression rating", the measurementTechnique could be "Zung Scale" or "HAM-D" or "Beck Depression Inventory". If there are several variableMeasured properties recorded for some given data object, use a PropertyValue for each variableMeasured and attach the corresponding measurementTechnique. The value can also be from an enumeration, organized as a MeasurementMetholdEnumeration.
pattern	CreativeWork or Product	A pattern that something has, for example 'polka dot', 'striped', 'Canadian flag'. Values are typically expressed as text, although links to controlled value schemes are also supported.
physicalRequirement	JobPosting	A description of the types of physical activity associated with the job. Defined terms such as those in O*net may be used, but note that there is no way to specify the level of ability as well as its nature when using a defined term.
potentialUse	ChemicalSubstance or MolecularEntity	Intended use of the BioChemEntity by humans.
programType	EducationalOccupationalProgram	The type of educational or occupational program. For example, classroom, internship, alternance, etc.
sensoryRequirement	JobPosting	A description of any sensory requirements and levels necessary to function on the job, including hearing and vision. Defined terms such as those in O*net may be used, but note that there is no way to specify the level of ability as well as its nature when using a defined term.
size	CreativeWork or Product	A standardized size of a product or creative work, specified either through a simple textual string (for example 'XL', '32Wx34L'), a QuantitativeValue with a unitCode, or a comprehensive and structured SizeSpecification; in other cases, the width, height, depth and weight properties may be more applicable.
skills	JobPosting or Occupation	A statement of knowledge, skill, ability, task or any other assertion expressing a competency that is desired or required to fulfill this role or to work in this occupation.
taxonomicRange	BioChemEntity	The taxonomic grouping of the organism that expresses, encodes, or in some way related to the BioChemEntity.
teaches	CreativeWork or EducationEvent or LearningResource	The item being described is intended to help a person learn the competency or learning outcome defined by the referenced term.
valueReference	PropertyValue or QualitativeValue or QuantitativeValue	A secondary value that provides additional information on the original value, e.g. a reference temperature or a type of measurement.
variesBy	ProductGroup	Indicates the property or properties by which the variants in a ProductGroup vary, e.g. their size, color etc. Schema.org properties can be referenced by their short name e.g. "color"; terms defined elsewhere can be referenced with their URIs.

More specific Types

CategoryCode

Source

https://github.com/schemaorg/schemaorg/issues/894

Examples

Example 1

No Markup JSON-LD Structure

Example notes or example HTML without markup.

Systems Research Engineer at a Software Publishers (NAICS code 511210)

Example encoded as JSON-LD in a HTML script tag.

<script type="application/ld+json">
{
  "@context": "https://schema.org/",
  "@type": "JobPosting",
  "title": "Systems Research Engineer",
  "industry": {
    "@type": "DefinedTerm",
    "termCode": "511210",
    "name": "Software Publishers",
    "url": "https://www.naics.com/naics-code-description/?code=511210",
    "inDefinedTermSet": "NAICS (North American Industry Classification System)"
  }
}
</script>

Structured representation of the JSON-LD example.

Example 2

No Markup Microdata RDFa JSON-LD Structure

Example notes or example HTML without markup.

<div>
   <h1>Library of Congress Resource Type: <b>Manuscript</b></h1>
   Code: <b>Man</b>
</div>

Example encoded as Microdata embedded in HTML.

<div itemscope itemtype="https://schema.org/DefinedTerm">
   <h1>Library of Congress Resource Type: <b><span itemprop="name">Manuscript</span></b></h1>
   Code: <b><span itemprop="termCode">Man</span></b>
   <link itemprop="inDefinedTermSet" href="http://id.loc.gov/vocabulary/resourceTypes"/>
</div>

Example encoded as RDFa embedded in HTML.

<div vocab="https://schema.org/" typeof="DefinedTerm">
   <h1>Library of Congress Resource Type: <b><span property="name">Manuscript</span></b></h1>
   Code: <b><span property="termCode">Man</span></b>
   <link property="inDefinedTermSet" href="http://id.loc.gov/vocabulary/resourceTypes"/>
</div>

Example encoded as JSON-LD in a HTML script tag.

{
 "@context": "https://schema.org/",
 "@type": "DefinedTerm",
 "termCode": "Man",
 "inDefinedTermSet": "http://id.loc.gov/vocabulary/resourceTypes"
}

Structured representation of the JSON-LD example.

Example 3

No Markup Microdata RDFa JSON-LD Structure

Example notes or example HTML without markup.

<div>
	<div>
	 <h1><a href="http://openjurist.org/dictionary/Ballentine">Ballentine&apos;s Law Dictionary</a></h1>
	</div>
	<div>
		<h2>Dictionary term</h2>
		Name: calendar year<br/>
		Description: The period from January 1st to December 31st, inclusive, of any year.<br/>
		In Dictionary: Ballentine&apos;s Law Dictionary
	</div>
	<div>
		<h2>Dictionary term</h2>
		Name: schema<br/>
		Description: A representation of a plan or theory in the form of an outline or model.<br/>
		In Dictionary: Ballentine&apos;s Law Dictionary
	</div>
</div>

Example encoded as Microdata embedded in HTML.

<div>
	<div itemscope itemtype="https://schema.org/DefinedTermSet">
	<link itemprop="additionalType" href="https://schema.org/Book">
	 <h1><a itemprop="url" href="http://openjurist.org/dictionary/Ballentine"><span itemprop="name">Ballentine&apos;s Law Dictionary</span></a></h1>
	</div>
	<div itemscope itemtype="https://schema.org/DefinedTerm">
		<h2>Dictionary term</h2>
		<link itemprop="url" href="http://openjurist.org/dictionary/Ballentine/term/calendar-year"/>
		Name: <span itemprop="name">calendar year</span><br/>
		Description: <span itemprop="description">The period from January 1st to December 31st, inclusive, of any year.</span><br/>
		In Dictionary: Ballentine&apos;s Law Dictionary
		<link itemprop="inDefinedTermSet" href="http://openjurist.org/dictionary/Ballentine">
	</div>
	<div itemscope itemtype="https://schema.org/DefinedTerm">
		<h2>Dictionary term</h2>
		<link itemprop="url" href="http://openjurist.org/dictionary/Ballentine/term/schema"/>
		Name: <span itemprop="name">schema</span><br/>
		Description: <span itemprop="description">A representation of a plan or theory in the form of an outline or model.</span><br/>
		In Dictionary: Ballentine&apos;s Law Dictionary
		<link itemprop="inDefinedTermSet" href="http://openjurist.org/dictionary/Ballentine">
	</div>
</div>

Example encoded as RDFa embedded in HTML.

<div  vocab="https://schema.org/">
	<div typeof="DefinedTermSet Book">
	 <h1><a property="url" href="http://openjurist.org/dictionary/Ballentine"><span property="name">Ballentine&apos;s Law Dictionary</span></a></h1>
	</div>
	<div typeof="DefinedTerm">
		<h2>Dictionary term</h2>
		<link property="url" href="http://openjurist.org/dictionary/Ballentine/term/calendar-year"/>
		Name: <span property="name">calendar year</span><br/>
		Description: <span property="description">The period from January 1st to December 31st, inclusive, of any year.</span><br/>
		In Dictionary: Ballentine&apos;s Law Dictionary
		<link property="inDefinedTermSet" href="http://openjurist.org/dictionary/Ballentine">
	</div>
	<div typeof="DefinedTerm">
		<h2>Dictionary term</h2>
		<link propery="url" href="http://openjurist.org/dictionary/Ballentine/term/schema"/>
		Name: <span property="name">schema</span><br/>
		Description: <span property="description">A representation of a plan or theory in the form of an outline or model.</span><br/>
		In Dictionary: Ballentine&apos;s Law Dictionary
		<link property="inDefinedTermSet" href="http://openjurist.org/dictionary/Ballentine">
	</div>
</div>

Example encoded as JSON-LD in a HTML script tag.

[
	{
		"@context": "https://schema.org/"
	},
	{
		"@type": ["DefinedTermSet","Book"],
		"@id": "http://openjurist.org/dictionary/Ballentine",
		"name": "Ballentine's Law Dictionary"
	},
	{
		"@type": "DefinedTerm",
		"@id": "http://openjurist.org/dictionary/Ballentine/term/calendar-year",
		"name": "calendar year",
		"description": "The period from January 1st to December 31st, inclusive, of any year.",
		"inDefinedTermSet": "http://openjurist.org/dictionary/Ballentine"
	},
	{
		"@type": "DefinedTerm",
		"@id": "http://openjurist.org/dictionary/Ballentine/term/schema",
		"name": "schema",
		"description": "A representation of a plan or theory in the form of an outline or model.",
		"inDefinedTermSet": "http://openjurist.org/dictionary/Ballentine"
	}
]

Structured representation of the JSON-LD example.

Example 4

No Markup Microdata RDFa JSON-LD Structure

Example notes or example HTML without markup.

<div>
	<h1>Occupation Term defined by <a href="http://onetonline.org">O*Net Online</a></h1>
	<h2>51-6042.00 - Shoe Machine Operators and Tenders</h2>
	Operate or tend a variety of machines to join, decorate, reinforce, or finish shoes and shoe parts.
</div>

Example encoded as Microdata embedded in HTML.

<div itemscope itemtype="https://schema.org/DefinedTerm">
	<h1>Occupation Term defined by <a itemprop="inDefinedTermSet" href="http://onetonline.org">O*Net Online</a></h1>
	<h2><span itemprop="termCode">51-6042.00</span> - <span itemprop="name">Shoe Machine Operators and Tenders</span></h2>
	<span itemprop="description">Operate or tend a variety of machines to join, decorate, reinforce, or finish shoes and shoe parts.</span>
</div>

Example encoded as RDFa embedded in HTML.

<div vocab="https://schema.org/" typeof="DefinedTerm">
	<h1>Occupation Term defined by <a property="inDefinedTermSet" href="http://onetonline.org">O*Net Online</a></h1>
	<h2><span property="termCode">51-6042.00</span> - <span property="name">Shoe Machine Operators and Tenders</span></h2>
	<span property="description">Operate or tend a variety of machines to join, decorate, reinforce, or finish shoes and shoe parts.</span>
</div>

Example encoded as JSON-LD in a HTML script tag.

{
 "@context": "https://schema.org/",
 "@type": "DefinedTerm",
 "name": "Shoe Machine Operators and Tenders",
 "termCode": "51-6042.00",
 "description": "Operate or tend a variety of machines to join, decorate, reinforce, or finish shoes and shoe parts.",
 "inDefinedTermSet": "http://onetonline.org"
}

Structured representation of the JSON-LD example.