fetus (n.), fetal (adj.)

https://doi.org/10.1351/goldbook.10718

Young mammal within the uterus of the mother, from the visible completion of characteristic organogenesis until birth.

Note: In humans, this period is usually defined as from the third month after fertilization until birth; prior to this the young mammal is referred to as an embryo.
Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 755 [Terms] [Paper]
Citation: 'fetus' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.10718 RIS BibTex EndNote
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