Definitions for "Allomorph"
A variety of pseudomorph which has undergone partial or complete change or substitution of material; -- thus limonite is frequently an allomorph after pyrite.
Each of two or more differing phonological manifestations of a given mor­pheme. Example: the es in boxes and the en in oxen are allomor­phs of the plural morpheme.
a variant phonological representation of a morpheme; "the final sounds of `bets' and `beds' and `horses' and `oxen' are allomorphs of the English plural morpheme"
Any one of two or more distinct crystalline forms of the same substance; or the substance having such forms; -- as, carbonate of lime occurs in the allomorphs calcite and aragonite.
any of several different crystalline forms of the same chemical compound; "calcium carbonate occurs in the allomorphs calcite and aragonite"