Betacism

Noun

Definitions

1.NounA sound change in which [b] (the voiced bilabial plosive) shifts to [v] (the voiced labiodental fricative).

"Betacism is a fairly common phenomenon: it has taken place in Greek, Hebrew, Spanish, and some Portuguese dialects, among others."

2.NounA speech disorder involving excessive use of the [b] sound, or conversion of other sounds into it.

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