(archaeology) a method of determining the age of rock that depends on the production of helium during the decay of various radioactive isotopes of uranium and thorium.

A social outing with a current or potential lover which holds the possibility of a sexual encounter.

To go on a double date.

A (romantic) date that two couples go on together.

An organized event in which prospective romantic partners engage in a series of one-to-one meetings in a library, based around the topic of favourite books.

(transitive) To gauge the age of (an organic material) by comparing the ratio of carbon isotopes.

plural of date mussel

synonym of International Date Line

simple past tense and past participle of pre-date

Synonym of enjo kosai