(computing) A system for representing numbers in which a radix of two is used; that is, each digit in a binary numeral may have either of two different values.

(astronomy) A binary star system in which one star of the pair is an optically invisible X-ray source.

plural of binary star system

(astronomy) A binary star.

(computing) A decimal number encoded in such a way that each digit is represented by its own binary sequence, simplifying conversion from binary to decimal.

plural of binary-coded decimal

(mathematics, computing) A binary tree in which each node has exactly two or zero children.

plural of binary numeral system

plural of full binary tree

(computer science) Synonym of Fenwick tree