appears_in:
- agro
- aism
- cdno
- cl
- clao
- clyh
- colao
- cteno
- ecao
- ecocore
- ecto
- envo
- foodon
- fovt
- gallont
- genepio
- go
- hso
- lepao
- maxo
- ons
- ontoavida
- pcl
- pco
- plana
- planp
- poro
- proco
- psdo
- pso
- rbo
- uberon
- upa
- xpo
- zp
banana: RO
banana_peel: _
contact:
  email: cjmungall@lbl.gov
  github: cmungall
  name: Chris Mungall
  orcid: 0000-0002-6601-2165
depends_on: []
deprecated: false
description: The OBO Relation Ontology provides consistent and unambiguous formal
  definitions of the relational expressions used in biomedical ontologies.
download_json: http://purl.obolibrary.org/obo/ro.json
download_obo: http://purl.obolibrary.org/obo/ro.obo
download_owl: http://purl.obolibrary.org/obo/ro.owl
example: '0002533'
example_extras:
- HOM0000022
homepage: https://oborel.github.io/
keywords:
- obo
- ontology
- relations
- subject agnostic
license: CC0-1.0
mappings:
  aberowl: RO
  agroportal: RO
  biocontext: RO
  biolink: RO
  bioportal: OBOREL
  fairsharing: FAIRsharing.9w8ea0
  go: RO
  miriam: ro
  n2t: ro
  obofoundry: ro
  ols: ro
  ontobee: RO
  prefixcommons: ro
  wikidata: P3590
  wikidata.entity: Q28729320
name: Relation Ontology
namespace_in_lui: true
pattern: ^(HOM)?\d{7}$
preferred_prefix: RO
prefix: ro
providers:
- code: ''
  description: OBO Relation Ontology through OntoBee
  homepage: http://obofoundry.org/ontology/ro.html
  name: OBO Relation Ontology through OntoBee
  uri_format: http://purl.obolibrary.org/obo/$1
- code: bio2rdf
  description: Bio2RDF is an open-source project that uses Semantic Web technologies
    to build and provide the largest network of Linked Data for the Life Sciences.
    Bio2RDF defines a set of simple conventions to create RDF(S) compatible Linked
    Data from a diverse set of heterogeneously formatted sources obtained from multiple
    data providers.
  homepage: https://bio2rdf.org
  name: Bio2RDF
  uri_format: http://bio2rdf.org/ro:$1
publications:
- doi: 10.1186/2041-1480-5-41
  pmc: PMC4177597
  pubmed: '25276335'
  title: 'Structuring research methods and data with the research object model: genomics
    workflows as a case study'
  year: 2014
- doi: 10.1186/gb-2005-6-5-r46
  pmc: PMC1175958
  pubmed: '15892874'
  title: Relations in biomedical ontologies
  year: 2005
rdf_uri_format: http://purl.obolibrary.org/obo/RO_$1
repository: https://github.com/oborel/obo-relations
synonyms:
- RO_proposed_relation
- obo_rel
- oborel
uri_format: http://purl.obolibrary.org/obo/RO_$1
version: '2025-06-24'
