During mating, the male's intromittent organ transfers sperm directly into the female's reproductive tract.

The intromitter was held liable for converting the heir's estate to his own use.

Some small fish species have unusually shaped intromitters that help them mate in tight spaces.

The biologist carefully photographed the insect's intromittent organ to document its species-specific morphology.

The biologist examined the intromittent organs under the microscope to document species differences.