phoneme.
(Del gr. f???(µa, sound of the voice).
1. m. Fon. Each of the minimum phonological units in the system of a language may oppose others in significant contrast; e.g., the initial consonants of pozo and rejoice, mata and bata; the interiors of cala and face; the end of the pair and peace; vowels of so Please, salt and Sun, etc. Within each phoneme fit different allophones.