rhotic

adjective
rho·​tic | \ ˈrō-tik How to pronounce rhotic (audio) \

Definition of rhotic

linguistics
1 of an English accent or dialect : retaining an /r/ sound before consonants and finally in a word at the end of an utterance In the rhotic accents … /r/ can occur, with an overt phonetic realization, in a wide variety of phonetic contexts, including preconsonantal and absolute-final environments …— J. C. Wells, Accents of English 1, 1982
2 of a vowel : influenced in coloring by an adjacent /r/ sound
3 of a speech sound : constituting an /r/ : possessing an /r/-like sound

First Known Use of rhotic

1968, in the meaning defined above

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