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| a diacritic indicating a vowel or other modification of sound |
| articulated with relatively relaxed tongue muscles |
retroflex
in phonetics, a consonant sound produced with the tip of the tongue curled back toward the hard palate. In Russian the sounds sh, zh (like the English s sound in "pleasure"), and shch are retroflex; there are also many retroflex consonants in the languages of India.
Learn more about retroflex with a free trial on Britannica.com.