- changes in a cooling body of igneous rock brought about by assimilation of fragments of, or chemical reaction with, the surrounding country rock
WordReference Random House Unabridged Dictionary of American English © 2026
en•do•mor•phism
(en′dō môr′fiz əm, -də),USA pronunciation n.
- Rocks[Petrol.]a change brought about within the mass of an intrusive igneous rock.
- Mathematicsa homomorphism of a set into itself.
- endomorph(ic) + -ism 1950–55
Collins Concise English Dictionary © HarperCollins Publishers::
endomorphism /ˌɛndəʊˈmɔːˌfɪzəm/ n