CSV
XML
JSON
N3
URI*
http://purl.obolibrary.org/obo/uo.owl
http://purl.obolibrary.org/obo/uo.owl
Bug database
https://github.com/bio-ontology-research-group/unit-ontology/issues
https://github.com/bio-ontology-research-group/unit-ontology/issues
Contact*
George Gkoutos (g.gkoutos@gmail.com)
Object creation date property
http://purl.org/dc/elements/1.1/created
http://purl.org/dc/elements/1.1/created
Submission date
January 16, 2026
Deprecated
false See more...
Description*
Units Ontology (UO) is an ontology currently being used in many scientific resources for the standardized description of units of measurements. Metrical units for use in conjunction with PATO See more...
Documentation
https://obofoundry.org/ontology/uo.html
https://obofoundry.org/ontology/uo.html
Example of resource
http://purl.obolibrary.org/obo/UO_0000294 See more...
License
Creative Commons License
Representation language*
OWL See more...
Prior version
https://agroportal.eu/ontologies/UO/submissions/2
2
Homepage
https://github.com/bio-ontology-research-group/unit-ontology
https://github.com/bio-ontology-research-group/unit-ontology
Indexed or included in catalog or repository
https://bioportal.bioontology.org
https://bioportal.bioontology.org
http://www.obofoundry.org
http://www.obofoundry.org
https://www.ebi.ac.uk/ols
https://www.ebi.ac.uk/ols
http://www.ontobee.org
http://www.ontobee.org
http://aber-owl.net/#
http://aber-owl.net/#
https://agroportal.eu
agroportal.eu
https://fairsharing.org
https://fairsharing.org
Generic type
http://omv.ontoware.org/2005/05/ontology#UpperLevelOntology
http://omv.ontoware.org/2005/05/ontology#UpperLevelOntology
Metadata vocabulary used
http://www.w3.org/2002/07/owl#
http://www.w3.org/2002/07/owl#
http://www.geneontology.org/formats/oboInOwl#
http://www.geneontology.org/formats/oboInOwl#
http://www.w3.org/2000/01/rdf-schema#
http://www.w3.org/2000/01/rdf-schema#
Object modification date property
http://purl.org/dc/elements/1.1/modified
http://purl.org/dc/elements/1.1/modified
Natural language
Root of obsolete branch
http://www.geneontology.org/formats/oboInOwl#ObsoleteClass
http://www.geneontology.org/formats/oboInOwl#ObsoleteClass
Generally related to or relies on
https://agroportal.eu/ontologies/BDG
BDG
https://agroportal.eu/ontologies/AGRO
AGRO
Preferred namespace prefix
uo See more...
Preferred namespace URI
http://purl.obolibrary.org/obo/UO_
http://purl.obolibrary.org/obo/UO_
Bibliographic reference
https://doi.org/10.1093/database/bas033
https://doi.org/10.1093/database/bas033
Access URL
http://purl.obolibrary.org/obo/uo.owl
http://purl.obolibrary.org/obo/uo.owl
Creation date*
January 16, 2026
Repository
https://github.com/bio-ontology-research-group/unit-ontology
https://github.com/bio-ontology-research-group/unit-ontology
Status*
production See more...
URI Lookup Endpoint
https://agroportal.eu/search?ontologies=UO&require_exact_match=true&q=
search?ontologies=UO&require_exact_match=true&q=
Identifier pattern
http://purl.obolibrary.org/obo/UO_[0-9]{7} See more...
Version information
2026-01-16 See more...
Version IRI
http://purl.obolibrary.org/obo/uo/releases/2026-01-16/uo.owl
http://purl.obolibrary.org/obo/uo/releases/2026-01-16/uo.owl

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