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1. Of or relating to the pronunciation of the sound (r).
2. Of or relating to dialects or accents of English in which the sound (r), usually represented in spelling by r, is pronounced when following a vowel and preceding a consonant or a syntactic pause, as fear, heard, poor, and car park. Unlike many varieties of British English, most varieties of American English are rhotic, and those American varieties that drop their r's are sometimes stigmatized.
(Phonetics & Phonology) phonetics denoting or speaking a dialect of English in which postvocalic rs are pronounced
[from Greek rho, the letter r]
of or pertaining to any dialect of English in which r is pronounced at the end of a syllable or before a consonant.
[1955–60; < Greek rho rho]