Characterized by having three (usually equivalent) components. / Triple. / (grammar) Pertaining to a language form referring to three of something, like people. (See Ambai language for an example.)

(grammar) The trial number.

The 300th anniversary of an event or happening.

Occurring every three hundred (300) years.

A grouping of three. / A word of three syllables. / A branch of a Chinese underground criminal society, mostly based in Hong Kong.

(geometry) A right triangle.

(geometry) An obtuse triangle.

(geometry) A triangle all of the angles of which are acute.

(geometry) An acute triangle.

(geometry) A triangle one of whose angles is obtuse.