- (used chiefly of viviparous mammals) the young of an animal in the womb or egg, especially in the later stages of development when the body structures are in the recognizable form of its kind, in humans after the end of the second month of gestation.
Origin of fetus
Examples from the Web for fetuses
As did their fetuses, including those of the four women who were in their last trimester.The Only Thing More Terrifying Than Ebola Is Being Pregnant With Ebola
Kent Sepkowitz, Abby Haglage
October 2, 2014
To be sure, there are wackos on the anti-choice side, with their photos of fetuses and extreme rhetoric.Ten Reasons Women Are Losing While Gays Keep Winning
July 6, 2014
At early genetic testing, 99 percent of fetuses are normal when a woman is 35, and 97 percent at 40.The Crumbling Post-35 Pregnancy Myth
June 29, 2014
Each is tasked with eating two fetuses (tiny beaks, feathers, and claws included), but only one can finish the challenge.‘Fear Factor’ Donkey Semen, More Gross Things Eaten on TV (Video)
February 3, 2012
A Christian activist had two fetuses called as witnesses—the latest sign of a nationwide attack on abortion rights.The Latest Abortion Outrage
March 2, 2011
Fetuses deficient at their extremities, or have a duplicature of parts.Zoonomia, Vol. I
In three fetuses the bacillus was found in the intestinal contents in pure culture; in one fetus it was isolated from the blood.
In the first guinea pig the two fetuses were practically fully developed and covered with hair.
Thus it seems unlikely that, if No. 11 conceived, she lost her fetuses in utero.An Experimental Translocation of the Eastern Timber Wolf
Thomas F. Weise
Fetuses were dead and were not appreciably larger than the one of the same clutch in the egg opened on July 31.
- the embryo of a mammal in the later stages of development, when it shows all the main recognizable features of the mature animal, esp a human embryo from the end of the second month of pregnancy until birthCompare embryo (def. 2)
Word Origin and History for fetuses
late 14c., "the young while in the womb or egg," from Latin fetus (often, incorrectly, foetus) "the bearing, bringing forth, or hatching of young," from Latin base *fe- "to generate, bear," also "to suck, suckle" (see fecund).
In Latin, fetus sometimes was transferred figuratively to the newborn creature itself, or used in a sense of "offspring, brood" (cf. Horace's "Germania quos horrida parturit Fetus"), but this was not the basic meaning. Also used of plants, in the sense of "fruit, produce, shoot." The spelling foetus is sometimes attempted as a learned Latinism, but it is not historic.
- The unborn young of a viviparous vertebrate having a basic structural resemblance to the adult animal.
- In humans, the unborn young from the end of the eighth week after conception to the moment of birth.
- The unborn offspring of a mammal at the later stages of its development, especially a human from eight weeks after fertilization to its birth. In a fetus, all major body organs are present.