plural of pairing energy

(set theory) One of the axioms in axiomatic set theory, equivalent to the statement that if two sets exist, there exists a set with those two sets as its sole elements.

(zoology) A time when birds or other animals bond or mate.

plural of pairing time

present participle of pair off

(mathematics) A process to uniquely encode two natural numbers into a single natural number.

plural of pairing function

A tool for drawing accurate circles or arches, usually consisting of two arms joined at one end in such a way that the arms can be opened and closed; one of the arms is pointed at its free end while the other holds a pencil, pencil lead or some other implement for making marks.

(cricket) The score of zero runs, having been out on the first ball faced in each innings of a two-innings match; a golden duck in each innings

A single girl (or, rarely, a boy), usually a foreigner, who helps a host family with childcare, housework, or both while staying as a guest with a host family, and generally receives a small allowance (or pocket money).