Adjective
Of or pertaining to vowel sounds; consisting of the vowel sounds.
Source: Webster's dictionaryvocalic sounds Source: Internet
the Gaelic language being uncommonly vocalic Source: Internet
vocalic segments Source: Internet
the vocalic ablaut Source: Internet
Chomsky and Halle represent speech sounds as bundles of plus-or-minus valued features (e.g. vocalic, high, back, anterior, nasal, etc.) The phonological component of each lexical entry is considered to be a linear sequence of these feature bundles. Source: Internet
Likewise, Modern English vocalic Y is pronounced identically to the letter I. But Modern English uses it in only certain places, unlike Middle and early Modern English. Source: Internet