/ (ˈmɛstə) / noun South Yorkshire dialect. master: used as a term of address for a man who is the head of a house. bad mester a term for the devil, used when speaking to children.

What is the abbreviation for trimester?

AmnioAmniocentesis (testing amniotic fluid used to diagnose chromosomal abnormalities and fetal infections)TrimesterThree-month period of time in pregnancyUrinalysisTesting your urineUSSUltrasound scanUterusWomb

What does the term trimester refer to?

Definition of trimester 1 : a period of three or about three months especially : any of three periods of approximately three months each into which a human pregnancy is divided. 2 : one of three terms into which the academic year is sometimes divided.