Meaning of RAS in English

noun Usage: often attributive Etymology: probably from 1rat + sarcoma; from the isolation of such genes in rat sarcomas Date: 1982 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)

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.