Adverb
prenatally (not comparable)
Before birth.
Greatly differing amounts of testosterone prenatally, at puberty, and throughout life account for a share of biological differences between males and females. Source: Internet
It is sometimes diagnosed prenatally by a nuchal scan or post-natally by lymphoscintigraphy. Source: Internet
This process begins prenatally, and it continues through the course of an organism's lifetime. Source: Internet