WordReference Random House Unabridged Dictionary of American English © 2026
smec•tite
(smek′tīt′),USA pronunciation n. [Mineral.]
- Mineralogymontmorillonite.
- Greek smēkt(ós) smeared + -ite1
- 1805–15
'smectite' also found in these entries (note: many are not synonyms or translations):