WordReference Random House Unabridged Dictionary of American English © 2026
di•al•lage
(dī′ə lij),USA pronunciation n. [Mineral.]
- Mineralogya variety of diopside with a laminated structure, found in gabbro and other igneous rocks.
- Greek diallagé̄ interchange, change, noun, nominal derivative from base of diallássein make an exchange, equivalent. to di- di-3 + allássein to change, exchange
- French
- 1795–1805