IPA: /ˈæl.əˌmɔrf/
KK: /ˈæl.əˌmɔrf/
A variant form of a basic unit of meaning in a language, which can change depending on its context. For example, the different sounds used to indicate plurals in English words like 'cats', 'pigs', and 'horses' are all examples of these forms.
In linguistics, the allomorph of the plural morpheme can vary depending on the final sound of the noun.
Allomorph is formed from "allo-" (from Greek 'allos', meaning other or different) and "morphe" (from Greek, meaning form or shape). The term refers to the different forms that a morpheme can take in different contexts.
Think of 'allo-' meaning 'other' and 'morphe' meaning 'form' — this helps you remember that an allomorph is a different form of a morpheme.