“They are common in monosyllables and incorporate a glide before a vowel at a syllable boundary.”

“When ablaut is a regular feature of a language's grammar, it is often called vowel gradation.”

“If voicing is delayed, the voiceless region at the beginning of the vowel is known as aspiration.”

“The original version was in Kufic script and contained no vowels or distinguishing, diacritical points.”

“Stressed syllables retain full vowel quality, whereas unstressed syllables may have weak vowels.”

“The greatest degree of pharyngealisation is found in the strident vowels of the Khoisan languages.”