trimester
(traɪˈmɛstə(r))
[ad. F. trimestre n. (Cotgr., 1611), ad. L. trimestris adj., f. tri- + mensis month.]
A period or term of three months; spec. each of three such periods into which human gestation is divided.
| 1821 S. Weston (title) A Trimester in France and Swisserland; or, a three months' journey..from Calais to Basle. 1895 Current Hist. (U.S.) V. 573 The cause of the insurgents seems to have made good progress in the third trimester of the revolt. 1907 Westm. Gaz. 6 Feb. 12/1 His two trimesters at Bonn University barely sufficed for him to attend a score of lectures. 1916 G. P. Shears Obstetrics ii. 27 Most writers divide pregnancy into three periods of three months each, three trimesters, as they are often called. 1938 A. L. Mudaliar Clin. Obstetrics vi. 33 The signs and symptoms vary with the different periods of pregnancy, and we shall classify them into..the first, second and third trimesters of pregnancy. 1980 Gates & Meckel Newborn Beauty (1981) iii. 79 During the first trimester you may feel nauseated, fatigued, and lose your appetite. |
So † trimestre a. Obs. rare—0 = next.
| 1623 Cockeram, Trimestre, of three moneths. |