: marked by a form different from the normal or expected because of development in special circumstances
used especially of mineral grains of igneous rocks whose mutual growths have prevented the assumption of outward crystal form
contrasted with idiomorphic

Word History


Greek allotrio- + English -morphic

First Known Use

1887, in the meaning defined above

Time Traveler
The first known use of allotriomorphic was in 1887

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Dictionary Entries Near allotriomorphic

Cite this Entry

“Allotriomorphic.” Dictionary, Merriam-Webster, Accessed 5 Dec. 2023.

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