ALLOPHONE
allophone
(noun) (linguistics) any of various acoustically different forms of the same phoneme
Source: WordNet® 3.1
Etymology
Noun
allophone (plural allophones)
(phonology) Any of two or more alternative pronunciations for a phoneme.
(Canada, strict) A person whose mother tongue is neither English nor French.
(Canada) A person whose mother tongue is one other than that spoken by the majority.
Adjective
allophone (comparative more allophone, superlative most allophone)
(Canada) That which is of a language neither English nor French.
(Canada) That which is of a language other than that spoken by the majority.
Source: Wiktionary