ras

noun, often attributive
\ ˈras How to pronounce ras (audio) \

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)

First Known Use of ras

1982, in the meaning defined above

History and Etymology for ras

ra(t) entry 1 + s(arcoma); from the initial isolation of such genes in rat sarcomas

Keep scrolling for more

Learn More about ras

Statistics for ras

Cite this Entry

“Ras.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ras. Accessed 7 May. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for ras

ras

noun, often attributive
\ ˈras How to pronounce ras (audio) \

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

History and Etymology for ras

rat sarcoma

Comments on ras

What made you want to look up ras? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Star Wars Words Quiz

  • cu jedi training
  • The bounty portion of bounty hunters (such as Boba Fett) comes from a Latin word meaning
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!