Intromission
Intromission , noun
[Compare French intromission. See Intromit.]
1.
The act of sending in or of putting in; insertion.
2.
(Zoology) The insertion of the male copulatory organ into the female in the process of coitus. — South
Four populations [of the vlei rat] varied in a number of parameters of copulatory behavior, such as latency to first mount, number of intromissions per series, and latency to intromission after first ejaculation.
3.
The act of letting go in; admission.
4.
(Scots Law) An intermeddling with the affairs of another, either on legal grounds or without authority.