(law, business) Having the same date.

(physics, archaeology, paleontology) A method of estimating the age of an artifact or biological vestige based on the relative amounts of the different isotopes of carbon present in a sample.

(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.

An organized event in which prospective romantic partners meet each other through a series of short one-to-one meetings

(archaeology) A technique used to date bones by measuring the amount of fluorine absorbed from the surrounding soil.

To go on a double date.

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.

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

A business providing a service allowing people to meet each other for romantic outings.