(chemistry) A chemical compound composed of only two elements. / (chemistry) A compound composed of an element and a radical (a group of atoms that behave as one piece).

(arithmetic) arithmetic using binary numbers

(mathematics, computer science) A data structure in which each node has at most two children, each node but the root has one parent, and there are no cycles.

(biology) The process whereby a cell divides asexually to produce two daughter cells.

(mathematics) a function of the type f:V⨯V→V, or more generally, a function of the type f:U_1⨯U_2⨯...⨯U_n→V in which exactly two of the sets Uᵢ are equal to V.

(astronomy) A pair of quasars which gravitationally interact with each other, unlike a standard double quasar, which does not interact.

A gender system in which people are categorized, in terms of gender and often also sex, exclusively as either male or female.

(genetics) A composite organism created from the combination of DNA from two separate genetic sources, rather than one. Essentially, a binary clone is the naturally produced offspring with germ cells, or else artificially produced offspring of two individuals that has been created without using germ cells.

(astronomy) Two gravitationally connected stars or other celestial objects which orbit around their center of mass.

plural of binary noun