FIRST TRIMESTER

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Time period extending from the first day of the last menstrual period through 12 weeks of gestation

Classified under:

Nouns denoting time and temporal relations

Hypernyms ("first trimester" is a kind of...):

trimester (a period of three months; especially one of the three three-month periods into which human pregnancy is divided)

Credits