Medical Dictionary

brown rat

noun

Medical Definition of BROWN RAT

:  a common domestic rat of the genus Rattus (R. norvegicus) that has been introduced worldwide—called also Norway rat

Browse

May 23, 2015
debouch Hear it
to emerge or cause to emerge
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears