(phonetics) Any vowel sound produced in the back of the mouth, such as /uː/ in rule or /əʊ/ in pole.

(phonetics) Any vowel sound produced in the front of the mouth. Examples: "a" in “man” and "e" in “gel”

(phonology) A phonological process in some languages that sets constraints on which vowels may be found near each other or within a word, such as back vowels or front vowels; sometimes resulting in variant affixes, clitics or similar variations.

(phonology) A paragogic vowel that is a repetition of the final vowel of a word

A vowel which is normally pronounced somewhat longer than other vowels (usually around 1½ to double length); represented in the IPA by the addition of a colon-like symbol, such as /aː/.

(linguistic morphology, Indo-European studies) A vowel appended to the end of a root (with which it constitutes a stem), before the ending.

(phonetics) A vowel produced with relatively little constriction of the vocal tract.

(phonetics) A vowel produced with relative constriction of the vocal tract.

schwa

schwa