submicroscopic structure
51cryptocrystalline — cryp•to•crys•tal•line [[t]ˌkrɪp toʊˈkrɪs tl ɪn, ˌaɪn[/t]] adj. mir having a submicroscopic crystalline structure • Etymology: 1860–65 …
52cryptocrystalline — [krip΄tōkris′təl in] adj. Mineralogy having a crystalline structure of submicroscopic crystals …
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