A four-sided plane figure is a quadrilateral or quadrangle, sometimes also called a tetragon. It can be further classified as a rectangle or oblong, kite, rhombus, and square.

The meaning of FOUR is a number that is one more than three. How to use four in a sentence.

something representing, represented by, or consisting of four units, such as a playing card with four symbols on it

Four is a Buy Now, Pay Later app that lets you split any online purchase into 4 easy payments, made every two weeks. Download the app, get your one-time virtual card, and shop at hundreds of your …

Idiom on all fours (Definition of four from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Apr 15, 2026 · Describing a set or group with four elements. four (countable and uncountable, plural fours) (countable) The digit or figure 4; an occurrence thereof. (countable) Anything measuring four …

/fɔ/ IPA guide Other forms: fours Definitions of four noun the cardinal number that is the sum of three and one synonyms: 4, IV, Little Joe, foursome, quadruplet, quartet, quatern, quaternary, quaternion, …

noun Something having four parts, units, or members, such as a musical quartet or a four-cylinder engine. idiom (all fours) All four limbs of an animal or person.

Four definition: The cardinal number equal to 3 + 1.

FOUR definition: a cardinal number, three plus one. See examples of four used in a sentence.