The International Phonetic Alphabet uses a

breve A breve (, less often , neuter form of the Latin "short, brief") is the diacritic mark ˘, shaped like the bottom half of a circle. As used in Ancient Greek, it is also called , . It resembles the caron (the wedge or in Czech, in ...

to indicate a speech sound (usually a

vowel A vowel is a syllabic speech sound pronounced without any stricture in the vocal tract. Vowels are one of the two principal classes of speech sounds, the other being the consonant. Vowels vary in quality, in loudness and also in quantity (l ...

) with extra-short duration. That is, is a very short vowel with the quality of . An example from English is the short

schwa In linguistics, specifically phonetics and phonology, schwa (, rarely or ; sometimes spelled shwa) is a vowel sound denoted by the International Phonetic Alphabet, IPA symbol , placed in the central position of the vowel chart. In English ...

of the word ''police'' . This is typical of

vowel reduction In phonetics, vowel reduction is any of various changes in the acoustic ''quality'' of vowels as a result of changes in stress, sonority, duration, loudness, articulation, or position in the word (e.g. for the Creek language), and which are perc ...

. Before the 1989 Kiel Convention, the breve was used for a non-syllabic vowel (that is, part of a

diphthong A diphthong ( ; , ), also known as a gliding vowel, is a combination of two adjacent vowel sounds within the same syllable. Technically, a diphthong is a vowel with two different targets: that is, the tongue (and/or other parts of the speech ...

), which is now indicated by an breve placed under the vowel letter, as in ''eye'' . It is also sometimes used for any

flap consonant In phonetics, a flap or tap is a type of consonantal sound, which is produced with a single contraction of the muscles so that one articulator (such as the tongue) is thrown against another. Contrast with stops and trills The main difference bet ...

s missing dedicated symbols in the IPA, since a flap is in effect a very brief stop.

References

Phonetics {{Phonetics-stub