الواصلة
te·trag·o·nalالنطق
علم أصول الكلمات
[ te-'tra-g&-n& ] (adjective.) 1868. Late Latin tetragonalis having four angles and four sides, from tetragonum quadrangle, from Greek tetragOnon, from neuter of tetragOnos tetragonal, from tetra- + gOnia angle; more at -GON.