D defs.my
Entry 2 senses · 2 variants Webster, 1913

Ras

/(räs)/ · IPA /rˈæs/
01 n. See 2d Reis.
  1. 1.
    See 2d Reis. See: Reis
02 n. The name and genetic symbol for a mutant gene that has been identified as one of those associated with certains types of cancer; -- it is a…
  1. 1.
    The name and genetic symbol for a mutant gene that has been identified as one of those associated with certains types of cancer; -- it is a form of oncogene. It was first observed in rats, but analogues have been found in humans and other animals.