principal diagonal

noun

Mathematics. See under diagonal(def 9).

Origin of principal diagonal

First recorded in 1960–65

Words nearby principal diagonal

principal argument, principal artery of thumb, principal axis, principal boy, principal clause, principal diagonal, principal focus, principal ideal, principal ideal domain, principal nursing officer, principal optic axis

Definition for principal diagonal (2 of 2)

diagonal
[ dahy-ag-uh-nl, -ag-nl ]
/ daɪˈæg ə nl, -ˈæg nl /

adjective

noun

Origin of diagonal

1535–45; < Latin diagōnālis < Greek diagṓn(ios) from angle to angle (see dia-, -gon) + Latin -ālis -al1

OTHER WORDS FROM diagonal

di·ag·o·nal·ly, adverb non·di·ag·o·nal, adjective, noun non·di·ag·o·nal·ly, adverb

British Dictionary definitions for principal diagonal

diagonal
/ (daɪˈæɡənəl) /

adjective

noun

Derived forms of diagonal

diagonally, adverb

Word Origin for diagonal

C16: from Latin diagōnālis, from Greek diagōnios, from dia- + gōnia angle

Scientific definitions for principal diagonal

diagonal
[ dī-ăg′ə-nəl ]

Adjective

Connecting two nonadjacent corners in a polygon or two nonadjacent corners in a polyhedron that do not lie in the same face.

Noun

A diagonal line segment.