解理 jiělǐ cleavage Origin Definitions Defs Strokes Stroke Words Sentences Sents 解理方向 jiělǐfāngxiàng direction of cleavage the direction in which a mineral or crystal naturally splits or breaks along certain planes解理面 jiělǐmiàn cleavage plane cleavage plane, referring to the tendency of minerals or rocks to split along definite planes