pronunciation of a vowel with narrower mouth width (often with raised tongue, less centralization, and longer duration); e.g. in English, /iː/ (tense) vs /ɪ/ (lax); /uː/ (tense) vs /ʊ/ (lax)
pronunciation of a vowel with narrower mouth width (often with raised tongue, less centralization, and longer duration); e.g. in English, /iː/ (tense) vs /ɪ/ (lax); /uː/ (tense) vs /ʊ/ (lax)