The unborn offspring from the end of the 8th week after conception (when the major structures have formed) until birth. Up until the eighth week, the developing offspring is called an embryo.
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1. The unborn young of a viviparous animal following the embryonic period. 2. [NA] In humans, the product of conception from the end of the eighth week to the moment of birth. [L. offspring]
- f. in fetu condition in which a small, imperfectly formed f. is contained within a f..
- harlequin f. a severe autosomal recessive form of collodion baby in a newborn, usually premature, infant; i.e., a form of ichthyosiform erythroderma characterized by encasement of the body in grayish brown, often fissured plaques resembling plates of armor and by grotesque deformity of the face with eclabium and gangrene of terminal phalanges; usually fatal within a few days, although treatment with 13-cis-retinoic acid has been successful in some cases. SYN: ichthyosis fetalis (1).
- impacted f. a f. which, because of its large size or narrowing of the pelvic canal, has become wedged and incapable of spontaneous advance or recession.
- f. papyraceus one of twin fetuses that has died and been pressed flat against the uterine wall by the growth of the living f..
- f. sanguinolentis (san-gwi′no-len′tis) dead f. that has become macerated.

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fe·tus or chiefly Brit foe·tus 'fēt-əs n, pl fe·tus·es or chiefly Brit foe·tus·es or foe·ti 'fēt-.ī an unborn or unhatched vertebrate esp. after attaining the basic structural plan of its kind specif a developing human from usu. two months after conception to birth compare EMBRYO

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a mammalian embryo during the later stages of development within the uterus. In human reproduction it refers to an unborn child from its eighth week of development.
fetal adj.

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fe·tus (feґtəs) [L.] the unborn offspring of any viviparous animal; specifically, the unborn offspring in the postembryonic period, after major structures have been outlined, in humans from nine weeks after fertilization until birth. Cf. embryo.

Medical dictionary. 2011.

Look at other dictionaries:

  • Fetus — Ein Fetus (auch Fötus, nach lateinisch fetus, „die Brut, Nachkommenschaft“) ist ein Embryo nach Ausbildung der inneren Organe während der Schwangerschaft. Mit Abschluss der Organogenese in der 8. Schwangerschaftswoche beginnt beim Menschen ab der …   Deutsch Wikipedia

  • fetus — FÉTUS, fetuşi, s.m. (anat.) Făt (1). – Din lat., fr. foetus. Trimis de LauraGellner, 10.05.2004. Sursa: DEX 98  FÉTUS s. (anat.) făt. Trimis de siveco, 05.08.2004. Sursa: Sinonime  fétus s. m …   Dicționar Român

  • Fetus — Fetus, Fétus Rare, le nom est porté dans la Meuse depuis le XVIIe siècle. On en trouve aussi des mentions anciennes dans le Loiret. Il évoque apparemment des fétus de paille, reste à savoir comment l interpréter. Plusieurs lieux dits s appellent… …   Noms de famille

  • fetus — late 14c., the young while in the womb or egg, from L. 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 (Cf. fecund)). In Latin, fetus… …   Etymology dictionary

  • fetus — fetus, foetus Medical usage in Britain and the US favours fetus, following the word s origin in Latin fetus ‘offspring’. In AmE this spelling is preferred generally, but foetus is still common in non medical use in BrE, largely because of the… …   Modern English usage

  • Fetus — Fe tus (f[=e] t[u^]s), n.; pl. {Fetuses} (f[=e] t[u^]s*[e^]z). [L. fetus, foetus, a bringing forth, brood, offspring, young ones, cf. fetus fruitful, fructified, that is or was filled with young; akin to E. fawn a deer, fecundity, felicity,… …   The Collaborative International Dictionary of English

  • Fetus — Album par Franco Battiato Sortie Janvier 1972 Enregistrement 1972 Genre Musique expérimentale Label Bla Bla …   Wikipédia en Français

  • Fetus-x — est une bande dessinée en ligne de l américain Eric Millikin. Liens externes fetusx.com la page officielle Une interview de Eric Millikin par Webcomics Examiner …   Wikipédia en Français

  • fetus — I noun baby, embryo, genesis, immature stage, life, origination, seed, source, starting point, unborn young II index embryo Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • fetus — [fēt′əs] n. pl. fetuses [ME < L fetus, foetus, a bringing forth, progeny; as adj., pregnant, fruitful: see FEMALE] an unborn offspring of a vertebrate animal that is still in the uterus or egg, esp. in its later stages and specif., in humans,… …   English World dictionary

  • Fetus-X — est une bande dessinée en ligne de l américain Eric Millikin. Liens externes fetusx.com la page officielle Une interview de Eric Millikin par Webcomics Examiner …   Wikipédia en Français

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