[The SI derived unit of absorbed radiation dose. One gray is equal to an absorbed dose of one joule per kilogram of matter; one gray equals 100 rads. The unit is named for the British physician L. Harold Gray, an authority on the use of radiation in the treatment of cancer. ( NCI )]
UMLS (NCI) C0556636 Relation/PAR: UnitOfMeasureAtomInsens
UnitOfMeasureAtomSens