An allomorph is defined as any of the crystalline forms of a substance.(noun)
An example of allomorphs are calcite and aragonite.
The definition of an allomorph is a different morpheme (unit of language) with the same meaning.(noun)
An example of an allomorph for the prefix in- is il-.
See allomorph in Webster's New World College Dictionary
Origin: allo- + -morph
See allomorph in American Heritage Dictionary 4
Origin: + morph(eme).
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