Dictionary

ras

noun, often attributive \ˈras\

Definition of RAS

:  any of a family of genes that undergo mutation to oncogenes and especially to some commonly linked to human cancers (as of the colon, lung, and pancreas)
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Origin of RAS

probably fr 1rat + sarcoma; from the isolation of such genes in rat sarcomas
First Known Use: 1982
Medical Dictionary

ras

noun , often attrib \ˈras\

Medical Definition of RAS

:  any of a family of genes that undergo mutation to oncogenes and especially to some commonly linked to human cancers (as of the colon, lung, and pancreas) <ras oncogenes> <ras proteins>

Origin of RAS

rat sarcoma

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