{"entity":{"id":"units-ontology","kind":"term","name":"Units of measurement ontology (UO)","aka":["Units Ontology","UO ontology","UO term","units of measurement ontology","unit ontology"],"tldr":"The Units of measurement ontology gives every unit (milligram per square metre, months, TPM) a code, so a number in a dataset says what it is a number of.","summary":"The Units of measurement ontology, listed by the OBO Foundry, is a metadata standard of units with identifiers and relations to the quantities they measure, used alongside the other OBO ontologies (Wikipedia describes ontologies as formal definitions of categories and relations). Clinical tables mix days and months, milligrams and milligrams per square metre; recording the unit code at ingest is what stops a survival time in months being read as days.","asOf":"2026-09-24","links":[{"label":"OBO Foundry: Units of measurement ontology","url":"https://obofoundry.org/ontology/uo.html"},{"label":"Wikipedia: ontology (information science)","url":"https://en.wikipedia.org/wiki/Ontology_(information_science)"}],"tags":["cansim-terms"],"related":["cancer-ai-vocabulary"],"cancers":[],"sections":[],"technologies":[],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":["hpo","provenance-fields","tpm-fpkm-counts"],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":["Listed in the CanSim terms map 1.0.0 (docs/onco/terms.json, generated 2026-09-24), CC BY 4.0, attribution: CanSim project, an open, public-data-first cancer foundation-model programme; CanSim page path /terms/uo."],"provenance":{"editedBy":"OnCo CanSim terms wave (Wikipedia summaries, standards and project pages, GDC and FDA pages, Europe PMC)","editedOn":"2026-09-24","note":"CanSim terms map 1.0.0 (docs/onco/terms.json, generated 2026-09-24), CC BY 4.0, attribution: CanSim project, an open, public-data-first cancer foundation-model programme"},"category":"Clinical"},"route":"/terms/units-ontology/","neighbours":{"term":[{"id":"cancer-ai-vocabulary","kind":"term","name":"Cancer AI vocabulary (CanSim terms map)","route":"/terms/cancer-ai-vocabulary/"},{"id":"hpo","kind":"term","name":"Human Phenotype Ontology (HPO)","route":"/terms/hpo/"},{"id":"provenance-fields","kind":"term","name":"Provenance fields for research data","route":"/terms/provenance-fields/"},{"id":"tpm-fpkm-counts","kind":"term","name":"TPM, FPKM and raw counts (expression units)","route":"/terms/tpm-fpkm-counts/"}]}}