phonaestheme
/ˌfɒnəsˈθiːm/(also phonestheme) Linguistics
noun
A phoneme or group of phonemes having recognizable semantic associations, as a result of appearing in a number of words of similar meaning.
Origin
1930s; earliest use found in John R. Firth (1890–1960), linguistic scholar. From phone + aesth- + -eme, after phonaesthetic and phoneme.