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Definition of: allomorph
(al′ə·môrf) noun
1. Mineral a A pseudomorph formed without change of chemical composition, as calcite after aragonite. Compare PARAMORPHISM. b A variety of pseudomorph the constituents of which have been partially or totally changed, or one which has assumed a substitute constituent.
2. Ling. Any of the positional variants of a morpheme. [<ALLO- + Gk. morphē form]
—al′lo·mor′phic adjective
—al′lo·mor′phism noun
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