Definition of Foetus

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

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

Definition of Foetus

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

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

3. Noun. (hypercorrect) (nonstandard spelling of fetus) ¹

¹ Source:

Definition of Foetus

1. fetus [n -ES] - See also: fetus

Medical Definition of Foetus

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)

Foetus Pictures

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Lexicographical Neighbors of Foetus

foetus (current term)
foetus in fetu
foetus papyraceus
foetus sanguinolentis
fog bow
fog collection
fog lamp
fog lamps
fog light
fog lights
fog line
fog oil

Literary usage of Foetus

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

1. The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1890)
"If the hemorrhage be less rapid, but sufficient to cause the death of the mother, and prolonged, the foetus will perish just before the mother. ..."

2. A Textbook of Physiology by Michael Foster (1891)
"Into this amniotic space the passages of the foetus, the mouth, anus, &c. open, and it serves as we shall see as a repository for the excretions of the ..."

3. Surgery, Gynecology & Obstetrics by American College of Surgeons, Franklin H. Martin Memorial Foundation (1914)
"The main issue of my case is, of course, the condition that directly caused the death of the foetus. The cause was constriction of the cord, ..."

4. A Text Book of Physiology by Michael Foster (1891)
"If indigo-carmine (§ 416) be injected into the veins of the mother, none passes by the umbilical vein into the tissues of the foetus ; these remain wholly ..."

5. A Text-book of Zoology by Thomas Jeffery Parker, William Aitcheson Haswell (1921)
"An allantoic placenta is not developed except in Perameles. The intra-uterine deve- lopment of the foetus is abbreviated, and birth takes place ..."

6. A treatise on the science and practice of midwifery by William Smoult Playfair (1878)
"In such cases it has often happened that the foetus has been born with evident marks of ... Cases are on record which prove that the foetus was attacked ..."

7. A Treatise on human physiology by John Call Dalton (1859)
"WE have shown in the preceding chapters that the foetus, during its development, depends for its supply of nutriment upon the lining membrane of the ..."

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