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Glossary of Terms

Trimester
A third of a pregnancy. Trimesters divide pregnancy into three 13-week periods. The development and potential problems of pregnancy and the fetus vary by trimester. For example, in the first trimester your baby's heart and other organs are formed. In the third trimester your baby prepares for birth by rapidly gaining weight, vernix, and maturing vital organs such as the lungs.
This is Children's Glossary of Medical Terms - and much more. You'll find the basic definitions and, for many medical subjects, a larger medical context written by an experienced Children's pediatrician. All the definitions are in an easy-to-print format.

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Date Last Modified: 08/28/2003 10:30