Home›Browse›C›coitus interruptuscoitus interruptusOur editors are putting together more complete content — check back in about 20 minutescoitus interruptuscoitus interruptus — nounnoun1. withdrawal of the penis before ejaculation to prevent pregnancy1.nounDefinitionwithdrawal of the penis before ejaculation to prevent pregnancyExampleSome couples practice coitus interruptus as a form of contraception.