An imaginary line on the Earth's surface at 180° longitude, mostly through the Pacific Ocean, to the east of which the calendar date is one day earlier than to the west.

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

(geology) A method of estimating the age of igneous rocks or of archaeological objects by measuring the amount of argon that has built up through the radioactive decay of potassium.

Alternative form of best before date.

plural of potassium-argon dating

(cooking) A type of bread containing a mixture of chopped dates and nuts.

plural of date-nut bread

A food quality marking which denotes the date until which a food item is guaranteed to be at its best.

(architecture) An embedded stone with a date carved into it.

plural of datestone