sexual intercourse

noun

1

: heterosexual intercourse involving penetration of the vagina by the penis : coitus

2

: intercourse (such as anal or oral intercourse) that does not involve penetration of the vagina by the penis

Synonyms

• coition
• coitus
• commerce
• congress
• copulating
• copulation
• coupling
• intercourse
• lovemaking
• mating
• relations
• sex
• sex act
• sexual relations

Word History

First Known Use

1753, in the meaning defined at sense 1

Kids Definition

sexual intercourse

noun

: sexual union especially involving penetration of the vagina by the penis

Medical Definition

sexual intercourse

noun

1

: heterosexual intercourse involving penetration of the vagina by the penis : coitus

2

: intercourse (as anal or oral intercourse) that does not involve penetration of the vagina by the penis