What does "birth time" mean?

The time at which someone is born.

What is a synonym for "birth time"?

Common synonyms include: origin time.

noun

noun ·Rare ·Advanced level

Noun

1
The time at which someone is born. countable, uncountable
2
The day of a person's birth. countable, dated, rare, uncountable
3
The time at which a mother is due to give birth. countable, dated, rare, uncountable

From Middle English burthtyme, berth-tyme, burth-tyme, birde time, birþe time, burþtime, equivalent to birth + time.