单词 tetragon 释义 tetragon, n. (a.)|ttrgn|Also 7 -gone.[ad. Gr. ά a quadrangle: see tetra- and -gon. So late L. tetragn-um, F. tetragone (14th c. in Godef. Compl.).]1. Geom. A figure having four angles and four sides; a quadrangle considered as one of...