Definition of "intromittent"

And, in the end, there must be a way for the developed young to leave the maternal nidus, and the intromittent canal may answer this purpose or, by chance, it may not.

1939, Frederic Wood Jones, Life and Living, Kegan Paul, Trench, Trubner & Company Ltd, page 181

Epigynum well developed, often with prominent paired lobes; internal female genitalia consisting of two widely separated pairs of receptacula with short intromittent ducts; […] .

1990, Raymond R. Forster, Norman I. Platnick, Jonathan A. Coddington, A Proposal and Review of the Spider Family Synotaxidae (Araneae, Araneoidea), American Museum of Natural History, page 39

In Microbrachius males, the paired intromittent structures occur ventromedially behind the posterior ventral lateral plates (Long et al., 2015: Fig. 1).

2019, Kate Trinajstic, Catherine Boisvert, John A. Long, Zerina Johanson, “12: Evolution of Vertebrate Reproduction”, in Zerina Johanson, Charlie Underwood, Martha Richter, editors, Evolution and Development of Fishes, Cambridge University Press, page 212