单词 plagihedral 释义 plagihedral, a. Cryst.|pledhidrl, -hdrl|Also plagiedral.[f. plagio- + Gr. ἕ seat, base.]Having certain faces obliquely situated; also said of such faces.1805–17R. Jameson Char. Min. (ed. 3) 212 [A crystal is said to be] Plagihedra...