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| | Indoeuropean |
 | | The set of softer "voiced" consonants "b," "d," "g" (followed by momentary vibration of the vocal cords), posited in the protolanguage, had apparently given way to the corresponding hard set "p," "t," "k." According to Grimm's law, this had come about by "devoicing" those consonants ("p," for example, is unaccompanied by vocal vibration). |
 | | Because the Anatolian protolanguage had already fissioned into daughter languages by that point, investigators estimate that it departed from the parent Indo-European no later than the fourth millennium B.C. and possibly much earlier. |
 | | An uncontested peculiarity of the sound system of the protolanguage, for example, is the near absence, or suppression, of one of the three consonants "p," "b" or "v," which are labials (consonants sounded with the lips). |
| www.biblemysteries.com /library/indoeuropean.htm (2777 words) |
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