phonetics, vowel roundedness refers to the amount of rounding in the lips during the articulation of a vowel. That is, it is vocalic labialization. When pronouncing a "rounded" vowel, the lips form a circular opening, while "unrounded" vowels (also called "spread" vowels) are pronounced with the lips relaxed. In most languages, front vowels tend to be unrounded, while back vowels tend to be rounded. But some languages, such as French and German, distinguish rounded and unrounded front vowels of the same height, while Vietnamese distinguishes rounded and unrounded back vowels of the same height.
When consonants are rounded, they are called labialized.
International Phonetic Alphabetvowel chart, rounded vowels are the ones that occur on the right in each pair of vowels. There are also diacritics, respectively IPA|ɔ̹ ɔ̜, to indicate greater or lesser degrees of rounding. The 'more' and 'less rounded' diacritics are sometimes also used with consonants to indicate degrees of labialization. (See relative articulation.)
Types of rounding
There are two types of vowel rounding: endolabial, or "compressed", and exolabial, or "protruded".
In endolabial rounding, the corners of the mouth are drawn slightly together and the lips may be compressed horizontally, but the lips do not protrude and only their outer surface is exposed. In exolabial rounding, the lips protrude like a tube, as when
kissing; the inner surface of the lips is exposed. Usually, back rounded vowels are exolabial, while front rounded vowels are endolabial. Swedish is unusual in that dialects of it make a phonemic distinction between the two types, having unrounded, endolabial, and exolabial front close-mid vowels. Some varieties of Dutch make the same distinction. There is no official IPA diacritic to represent this contrast, and without disambiguation both the word "rounded" and the symbols for the rounded vowels are understood to refer to exolabial rounding. In standard Japanese, the back high vowel /u/ has no lip rounding at all (it is always [ɯ] ).
Iroquoian languageshave no labial consonants. They do have IPA|/w/, IPA|/ɡʷ/, and IPA|/kʷ/, but these do not involve noticeable rounding (protrusion) of the lips. It may be that they are purely velar IPA| [ɰ, ɡᶭ, kᶭ] , but it is also possible that they are compressed.
List of phonetics topics
Close front compressed vowel
Close central compressed vowel
Close back compressed vowel
Wikimedia Foundation. 2010.
Look at other dictionaries:
roundedness — noun see rounded … New Collegiate Dictionary
roundedness — See rounded. * * * … Universalium
roundedness — raÊŠndÉªdnÉªs n. curvedness, state of being made of curved forms … English contemporary dictionary
roundedness — round·ed·ness … English syllables
roundedness — noun the property possessed by a rounded convexity • Syn: ↑bulginess • Derivationally related forms: ↑bulgy (for: ↑bulginess), ↑rounded • Hypernyms: ↑convexity, ↑ … Useful english dictionary
Vowel — In phonetics, a vowel is a sound in spoken language, such as English ah! IPA| [ɑː] or oh! IPA| [oʊ] , pronounced with an open vocal tract so that there is no build up of air pressure at any point above the glottis. This contrasts with consonants … Wikipedia
Американский фонетический алфавит — Американистическая фонетическая запись, англ. Americanist phonetic notation, или Американский фонетический алфавит, англ. (North) American[ist] Phonetic Alphabet, АФА, APA система фонетической транскрипции, разработанная европейскими и… … Википедия
Marshallese phonology — Marshallese Alphabet, Public Library, Delap–Uliga–Djarrit (DUD) Main article: Marshallese language Marshallese phonology is characterized by: 22 consonant phonemes with contrasting primary and … Wikipedia
Американская фонетическая транскрипция — Американистическая фонетическая запись, англ. Americanist phonetic notation, или Американский фонетический алфавит, англ. (North) American[ist] Phonetic Alphabet, АФА, APA система фонетической транскрипции, разработанная… … Википедия
Mid central vowel — The mid central vowel is a type of vowel sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is IPA|ə, and the equivalent X SAMPA symbol is @. The IPA symbol is a turned printed… … Wikipedia