
# Class: ontology class


a concept or class in an ontology, vocabulary or thesaurus

URI: [biolink:OntologyClass](https://w3id.org/biolink/vocab/OntologyClass)

![img](images/OntologyClass.png)

## Parents

 *  is_a: [NamedThing](NamedThing.md) - a databased entity or concept/class

## Children

 * [GeneOntologyClass](GeneOntologyClass.md) - an ontology class that describes a functional aspect of a gene, gene prodoct or complex
 * [OrganismTaxon](OrganismTaxon.md)
 * [RelationshipType](RelationshipType.md) - An OWL property used as an edge label

## Mixin for

 * [Attribute](Attribute.md) (mixin)  - A property or characteristic of an entity

## Referenced by class

 *  **[Association](Association.md)** *[association type](association_type.md)*  <sub>OPT</sub>  **[OntologyClass](OntologyClass.md)**
 *  **[GeneToExpressionSiteAssociation](GeneToExpressionSiteAssociation.md)** *[quantifier qualifier](gene_to_expression_site_association_quantifier_qualifier.md)*  <sub>OPT</sub>  **[OntologyClass](OntologyClass.md)**
 *  **[NamedThing](NamedThing.md)** *[has molecular consequence](has_molecular_consequence.md)*  <sub>0..*</sub>  **[OntologyClass](OntologyClass.md)**
 *  **[PairwiseInteractionAssociation](PairwiseInteractionAssociation.md)** *[interacting molecules category](interacting_molecules_category.md)*  <sub>OPT</sub>  **[OntologyClass](OntologyClass.md)**
 *  **[Association](Association.md)** *[qualifiers](qualifiers.md)*  <sub>0..*</sub>  **[OntologyClass](OntologyClass.md)**
 *  **[GeneToExpressionSiteAssociation](GeneToExpressionSiteAssociation.md)** *[quantifier qualifier](quantifier_qualifier.md)*  <sub>OPT</sub>  **[OntologyClass](OntologyClass.md)**

## Attributes


### Inherited from named thing:

 * [id](id.md)  <sub>REQ</sub>
    * Description: A unique identifier for a thing. Must be either a CURIE shorthand for a URI or a complete URI
    * range: [IdentifierType](IdentifierType.md)
    * inherited from: [NamedThing](NamedThing.md)
    * in subsets: (translator_minimal)
 * [name](name.md)  <sub>REQ</sub>
    * Description: A human-readable name for a thing
    * range: [LabelType](LabelType.md)
    * inherited from: [NamedThing](NamedThing.md)
    * in subsets: (translator_minimal)
 * [category](category.md)  <sub>1..*</sub>
    * Description: Name of the high level ontology class in which this entity is categorized. Corresponds to the label for the biolink entity type class. In a neo4j database this MAY correspond to the neo4j label tag
    * range: [IriType](IriType.md)
    * inherited from: [NamedThing](NamedThing.md)
    * in subsets: (translator_minimal)

### Domain for slot:

 * [subclass of](subclass_of.md)  <sub>0..*</sub>
    * Description: holds between two classes where the domain class is a specialization of the range class
    * range: [IriType](IriType.md)
    * in subsets: (translator_minimal)
