|teˌtär|tȯid ə l, tə̇|tä- adjective
of a crystal : having symmetry that produces a tetartoid : having three inverse tetrad axes and four triad axes of symmetry
|teˌtär|tȯid ə l, tə̇|tä- adjective
of a crystal : having symmetry that produces a tetartoid : having three inverse tetrad axes and four triad axes of symmetry
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012