Medical Dictionary


noun pe·ri·od \ˈpir-ē-əd\

Medical Definition of PERIOD

a :  a portion of time determined by some recurring phenomenon b :  a single cyclic occurrence of menstruation
:  a chronological division <the period of incubation of a disease>
May 22, 2015
nepotism Hear it
favoritism based on kinship
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