allophone

Any of two or more alternative pronunciations for a phoneme.

In some languages, [ʋ] is an allophone of /v/.

In the former the bilabial phone forms an allophone of the phoneme /v/ in word-final position after /a/ and an allophone of the phoneme /u/ when it is preceded by an obstruent and followed by /a/; […]

A person whose mother tongue is one other than that spoken by the majority.

A person whose mother tongue is one other than that spoken by the majority.

However, “the languages used by STM staff during customer interactions are French and English,” the transit authority said. “Indeed, during phone calls or emails, STM employees speak English with anglophone or allophone customers who do not speak French.”

Of or relating to those whose mother tongue is neither English, French, nor (sometimes) an indigenous language of Canada.

In every case the allophone population is vastly larger than the proportion of francophones, which ranges from 4.2 percent […] from other parts of Canada more than international immigration from abroad: despite a growing allophone presence, […]

As immigration increases from different parts of the world, the linguistic makeup of Canada changes. In 2006, the allophone population—individuals whose mother tongue is neither English nor French—totalled 6.3 million, […]

That which is of a language other than that spoken by the majority.