Of, relating to, affecting, or designed for use with two ears.

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

plural of binary

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

plural of binary quasar

plural of binary operation

plural of binary function

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

(algebra, computing) A symbol representing binary operation; an operator taking two operands.

plural of binomial coefficient