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fetus is a topic covered in the Taber's Medical Dictionary.

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[L. fetus, bearing young, fetus, offspring]

1. An unborn animal in its later stages of development.
2. The unborn human from the beginning of the ninth week, i.e., the third month, of gestation until birth. (Before 9 weeks, the developing zygote is called an embryo.) During the fetal period, the organ systems mature and grow. At 9 weeks, a human fetus weighs about 14 g (1/2 oz); in the subsequent approx. 29 weeks, the fetus becomes 250 times heavier, so a typical newborn weighs about 3500 g (7 3/4 lb). A human fetus gets all its nutrition through the placenta, which increases in size with the fetus.

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Venes, Donald, editor. "Fetus." Taber's Medical Dictionary, 23rd ed., F.A. Davis Company, 2017. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/746367/all/fetus_amorphus.
Fetus. In: Venes D, ed. Taber's Medical Dictionary. 23rd ed. F.A. Davis Company; 2017. https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/746367/all/fetus_amorphus. Accessed July 23, 2019.
Fetus. (2017). In Venes, D. (Ed.), Taber's Medical Dictionary. Available from https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/746367/all/fetus_amorphus
Fetus [Internet]. In: Venes D, editors. Taber's Medical Dictionary. F.A. Davis Company; 2017. [cited 2019 July 23]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/746367/all/fetus_amorphus.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - fetus ID - 746367 ED - Venes,Donald, BT - Taber's Medical Dictionary UR - https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/746367/all/fetus_amorphus PB - F.A. Davis Company ET - 23 DB - Nursing Central DP - Unbound Medicine ER -