allophone

noun

al·​lo·​phone ˈa-lə-ˌfōn 

: one of two or more variants of the same phoneme

the aspirated \p\ of pin and the unaspirated \p\ of spin are allophones of the phoneme \p\

allophonic

ˌa-lə-ˈfä-nik 

adjective

Word History

Etymology

allo- + -phone entry 1

First Known Use

1938, in the meaning defined above