Definition of Fetus

1. Noun. An unborn or unhatched vertebrate in the later stages of development showing the main recognizable features of the mature animal.

Exact synonyms: Foetus
Specialized synonyms: Monster, Teras, Abortus, Baby
Generic synonyms: Craniate, Vertebrate
Terms within: Ductus Arteriosus, Umbilical, Umbilical Cord
Derivative terms: Fetal, Foetal

Definition of Fetus

1. n. The young or embryo of an animal in the womb, or in the egg; often restricted to the later stages in the development of viviparous and oviparous animals, embryo being applied to the earlier stages.

Definition of Fetus

1. Noun. An unborn or unhatched vertebrate showing signs of the mature animal. ¹

2. Noun. A human embryo after the 8th week of gestation. ¹

¹ Source:

Definition of Fetus

1. the unborn organism carried within the womb in the later stages of its development [n -ES]

Medical Definition of Fetus

1. A developing unborn offspring of an animal that gives birth to its young (as opposed to laying eggs). From approximately three months after conception the offspring take on a recognisable form (all parts in place, etc.). In human development, the period after the seventh or eighth week of pregnancy is the foetal period. (12 Nov 1997)

Fetus Pictures

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Lexicographical Neighbors of Fetus

fettuccine Alfredo
fetus (current term)
fetus fetishist
fetus in fetu
feu de joie

Literary usage of Fetus

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Journal of Experimental Medicine by Rockefeller University, Rockefeller Institute, Rockefeller Institute for Medical Research (1920)
"Among the twenty-six cases of abortion associated with Vibrio fetus,1-2 of which one also contained Bacillus abortus, there was none involving heifers. ..."

2. Anomalies and curiosities of medicine by George Milbry Gould, Walter Lytle Pyle (1901)
"Mounsey of Riga, physician to the army of the Czarina, sent to the Royal Society in 1748 the bones of a fetus that had been extracted from one of the ..."

3. Science by American Association for the Advancement of Science (1883)
"Radioautography of cultured amniotic fluid cells obtained (a) from the affected fetus of 18 gestational weeks by amniocentesis, showing no accumulation of ..."

4. Biological Bulletin by Marine Biological Laboratory (Woods Hole, Mass.) (1915)
"fetus III. has the doubling of band i, beginning 4 scutes from the left. The symmetry is the same as that of the mother, but a reversal of that of the ..."

5. The U. S. Coal Industry, 1970-1990: Two Decades of ChangeTechnology (1992)
"Several factors that could affect both the mother and the fetus indicate that women ... 13.3.1 Effects of Diving on the fetus The health and safety of the ..."

6. Moral problems in hospital practice by Patrick A. Finney (1922)
"For this reason, Question 17 has been framed in terms to cover all operations that are directly destructive of the life of the fetus. DIRECT KILLING OF THE ..."

7. The Practice of Obstetrics: Designed for the Use of Students and by James Clifton Edgar (1916)
"It has been shown in the guinea-pig, for example, that the fetus can endure ... Danger to the fetus must be feared only when the maternal temperature rises ..."

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