quaternion
1quaternion — [ kwatɛrnjɔ̃ ] n. m. • 1862; angl. 1843; bas lat. quaternio « groupe de quatre » ♦ Math. Nombre complexe qui est constitué par quatre nombres scalaires (s, a, b, c) pris dans un ordre déterminé, et combinés selon certaines lois. ● quaternion nom… …
2Quaternion — Qua*ter ni*on, n. [L. quaternio, fr. quaterni four each. See {Quaternary}.] 1. The number four. [Poetic] [1913 Webster] 2. A set of four parts, things, or person; four things taken collectively; a group of four words, phrases, circumstances,… …
3Quaternion — Qua*ter ni*on, v. t. To divide into quaternions, files, or companies. Milton. [1913 Webster] …
4quaternion — [kwə tʉr′nē ən, kwätʉr′nē ən] n. [ME < LL quaternio < L quaterni: see QUATERNARY] 1. a set of four 2. Math. an expression that is the sum of four terms, one of which is real and three of which contain imaginary units, and that can be… …
5Quaternion — Quaternions, in mathematics, are a non commutative extension of complex numbers. They were first described by the Irish mathematician Sir William Rowan Hamilton in 1843 and applied to mechanics in three dimensional space. They find uses in both… …
6Quaternion — Plaque commémorative de la naissance des quaternions sur le pont de Broom (Dublin). « Ici, le 16 octobre 1843, alors qu il se promenait, Sir William Rowan Hamilton découvrit dans un éclair de génie la formule fondamentale sur la… …
7Quaternion — ℍ Gedenktafel an der Broom Bridge in Dublin, wo William Rowan Hamilton die Multiplikationsregeln im Oktober 1843 spontan in den Stein ritzte. Die Quaternio …
8Quaternion — A band of four soldiers. Peter was committed by Herod to the custody of four quaternions, i.e., one quaternion for each watch of the night (Acts 12:4). Thus every precaution was taken against his escape from prison. Two of each quaternion were …
9quaternion — noun Etymology: Middle English quaternyoun, from Late Latin quaternion , quaternio, from Latin quaterni four each, from quater four times; akin to Latin quattuor four more at four Date: 14th century 1. a set of four parts, things, or persons 2. a …
10quaternion — /kweuh terr nee euhn/, n. 1. a group or set of four persons or things. 2. Bookbinding. four gathered sheets folded in two for binding together. 3. Math. a. an expression of the form a + bi + cj + dk, where a, b, c, and d are real numbers; i2 = j2 …
