diallage

noun

di·​al·​lage

ˈdīəlij

plural -s

: a dark green or bronze-colored laminated pyroxene common in certain igneous rocks (hardness 4, specific gravity 3.2–3.35)

diallagic

¦dīə¦lajik

adjective

Word History

Etymology

French, from Greek diallagē change, from diallag-, aorist stem of diallassein to interchange, exchange, change, from dia- + allassein to change, from allos other

First Known Use

1805, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now