Definition of allomorph noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈæləmɔːf//
; NAmE NAmE//ˈæləmɔːrf//
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one possible form of a particular morpheme. The forms /s/, /z/ and /ɪz/ in cats, dogs and horses are allomorphs of the plural ending s. Word Origin 1940s: from allo- ‘other, different’ + morpheme.
See the Oxford Advanced American Dictionary entry: allomorph