gestation period

https://doi.org/10.1351/goldbook.10765

Time from conception to birth, during which a fetus develops.

Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 760 (https://doi.org/10.1515/pac-2015-1202)