prevocalic UK /ˌpɹiː.vəʊˈkæl.ɪk/US /ˌpɹi.voʊˈkæl.ɪk/ adjective1 •Immediately preceding a vowel or vowel soundExamples that may be used to teach those with articulatory and phonological impairments the prevocalic /r/ sound are: run, race, rain, tree, and spray.