tetragon, tetragonum

tetragon, tetragonum: Quadrangle; a figure having four sides. [tetra- + G. gonia, angle]

- t. lumbale a quadrangular space bounded laterally by the obliquus externus abdominis muscle, medially by the erector spinae, above by the serratus posterior inferior, and below by the internal abdominal oblique muscle.

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Tetragon — Tet ra*gon, n. [L. tetragonum, Gr. tetra gwnon; te tra (see {Tetra }) + gwni a corner, angle: cf. F. t[ e]tragone.] 1. (Geom.) A plane figure having four sides and angles; a quadrangle, as a square, a rhombus, etc. [1913 Webster] 2. (Astrol.) An… … The Collaborative International Dictionary of English
tetragon — [te′trə gän΄] n. [LL tetragonum < Gr tetragōnon: see TETRA & GON] a plane figure with four angles and four sides; quadrangle … English World dictionary
Tetragon — Viereck * * * ◆ Te|tra|gon 〈n. 11〉 Viereck [<grch. tetragonos „viereckig, vierkantig“] ◆ Die Buchstabenfolge te|tr... kann in Fremdwörtern auch tet|r... getrennt werden. * * * Te|t|ra|gon, das; s, e [spätlat. tetragonum < griech. tetrágōnon … Universal-Lexikon
Tetragon — Te|tra|gon das; s, e <über spätlat. tetragonum aus gleichbed. gr. tetrágōnon zu gōnía »Winkel«> Viereck … Das große Fremdwörterbuch
tetra — [te′trə] n. [contr. < ModL Tetragonopterus, old genus designation < tetragonum,TETRAGON + pterus, PTEROUS] any of a number of brightly colored, tropical American, characin fishes, often kept in aquariums … English World dictionary

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