Definition of osculate
Did You Know?
Osculate comes from the Latin noun osculum, meaning "kiss" or "little mouth." It was included in a dictionary of "hard" words in 1656, but we have no evidence that anyone actually used it until the 19th century, except for scientists who used it differently, to mean "contact." Today, "osculate" is used in geometry for the action of a pair of curves or surfaces that touch so that they have a common tangent at the point of contact. When "osculate" is used to mean "kiss," the context is often humorous.
Origin and Etymology of osculate
Latin osculatus, past participle of osculari, from osculum kiss, from diminutive of os mouth — more at oral
First Known Use: circa 1656
Seen and Heard
What made you want to look up osculate? Please tell us where you read or heard it (including the quote, if possible).