
Fetus
Stage Specific
Use 'fetus' for development stages over eight weeks, before that it's called 'embryo'.
The fetus is now the size of an orange.
Medical Context
'Fetus' is often used by healthcare professionals to communicate about pregnancy.
The fetus's heartbeat is strong and healthy.
Technical Term
'Fetus' is a technical term; 'baby' might be used informally after birth.
We saw our baby's fetus during the sonogram.