allomorph
noun/ˈæləmɔːf/
/ˈæləmɔːrf/
(linguistics)- 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 Origin1940s: from allo- ‘other, different’ + morpheme.
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allomorph