* (chiefly Canadian and US) fetus
(Canada, US) An unborn or unhatched vertebrate showing signs of the mature animal.
(Canada, US) A human embryo after the 8th week of gestation.
- The sequence is; molecules in reproductive systems, then gametes, zygotes, morulas, blastocysts, and then fetuses .
* The form fetus is preferred in North America and in the scientific community, whereas foetus is still commonly used in Commonwealth nations.