英语词汇triangle的起源、历史背景-英语词源词典

词汇	triangle
词源	triangle n. late 14c., from Old French triangle (13c.), from Latin triangulum "triangle," noun use of neuter of adjective triangulus "three-cornered, having three angles," from tri- "three" (see tri-) + angulus "corner, angle" (see angle (n.)). Entries linking to triangle tri- word-forming element meaning "three, having three, once every three," from Latin tres (neuter tria) or Greek treis, trias "three" (see three). angle n. "space or difference in direction between intersecting lines," late 14c., from Old French angle "an angle, a corner" (12c.) and directly from Latin angulus "an angle, a corner," a diminutive form from PIE root ang-/ank- "to bend" (source also of Greek ankylos "bent, crooked," Latin ang(u)ere "to compress in a bend, fold, strangle;" Old Church Slavonic aglu "corner;" Lithuanian anka "loop;" Sanskrit ankah "hook, bent," angam "limb;" Old English ancleo "ankle;" Old High German ango "hook"). The figurative sense "point or direction from which one approaches something" is from 1872. Angle-bracket is attested by 1781 in carpentry; 1956 in typography. tri-angle (n.)triangular (adj.)triangulate (v.)triangulation (n.) updated on February 16, 2014
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triangle n.