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Noun: first trimester
  1. Time period extending from the first day of the last menstrual period through 12 weeks of gestation

Derived forms: first trimesters

Type of: trimester

Encyclopedia: First trimester

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first principles
first quarter
first reading
first sacker
first sergeant
First State
first step
first stomach
first strike
first team
first trimester
First Vatican Council
First Viscount Haldane of Cloan
First Viscount Nuffield
first visual area
first water
First World
First World War
first-aid kit
first-aid station
firstborn