The beginning; the first stage of anything.
A rudimentary plant contained in the seed.
In the reproductive cycle, the stage after the fertilization of the egg that precedes the development into a fetus.
In viviparous animals, the young animal's earliest stages in the mother's body
In humans, usually the cell growth up to the end of the seventh week in the mother's body
An organism in the earlier stages of development before it emerges from the egg, or before metamorphosis.
Used other than figuratively or idiomatically: see first, night.
The first night after marriage.
The first public performance of a play or other show, normally assumed to be held in the evening.