| tritrichomonas foetus | A species of flagellate parasitic protozoa. It possesses a long undulating membrane that is bordered on its outer margin by a flagellum that becomes free posteriorly. This organism causes infections in cows that could lead to temporary infertility or abortion. (12 Dec 1998) |
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| foetus | <biology, embryology, obstetrics> 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 in fetu | Condition in which a small, imperfectly formed foetus is contained within a foetus. (05 Mar 2000) |
| foetus papyraceus | One of twin foetus's that has died and been pressed flat against the uterine wall by the growth of the living foetus. (05 Mar 2000) |
| foetus sanguinolentis | Dead foetus that has become macerated. (05 Mar 2000) |