What is the meaning of first trimester?

noun

  • Time period extending from the first day of the last menstrual period through 12 weeks of gestation. .
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). first trimester. Retrieved September 21, 2026, from http://smartdefine.org/first_trimester/definitions/1250224
ChicagoWordNet. 2010. "first trimester" http://smartdefine.org/first_trimester/definitions/1250224 (accessed September 21, 2026).
HarvardWordNet 2010, first trimester, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/first_trimester/definitions/1250224>.
MLAWordNet. "first trimester" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/first_trimester/definitions/1250224>