The Collaborative International Dictionary of English v.0.48:
Vowelize \Vow"el*ize\, v. t. To give the quality, sound, or office of a vowel to. [1913 Webster]WordNet (r) 3.0 (2006):
vowelize v 1: pronounce as a vowel; "between two consonants, this liquid is vowelized" [syn: vocalize, vocalise, vowelize, vowelise]