IPA: /ˌæntəˈneɪtəli/
KK: /æntəˈneɪtəli/
At a time before a baby is born.
The doctor recommended certain tests to be done antenatally to ensure the health of the baby.
Antenatally → It is formed from "ante-" (meaning before) and "natus" (meaning born). The word "antenatally" refers to the period before birth.
Think of 'ante-' meaning 'before' and 'natus' meaning 'born' — this helps you remember that antenatally refers to the time before birth.