An external organ of a male organism that is specialized to deliver sperm during copulation. Intromittent organs are found most often in terrestrial species, as most aquatic species fertilize their eggs externally, although there are exceptions[WP]. [ ]

This is just here as a test because I lose it

Term information


grouping_class, organ_slim

curator note

this is a broad grouping class connecting a number of different analagous organs by their function. We place the insect aedeagus here rather than penis, although this is somewhat arbitrary given the broadness of the current definition

external definition

Surface structure that is an external structure of a male organism through which sperm is transferred to a female organism during mating.[TAO]

has narrow synonym


has related synonym

copulatory organ



Term relations