Entry 3 senses · 2 variants Webster, 1913 Glaciate /glāsh'-ē-ātˌ/ · Gla·ci·ate · IPA /ɡlˈeɪʃiːˌeɪt/ v. i. v. t. 01 v. i. To turn to ice. 1. To turn to ice. 02 v. t. To convert into, or cover with, ice. 1. To convert into, or cover with, ice. 2. To produce glacial effects upon, as in the scoring of rocks, transportation of loose material, etc.(Geol.) Phrases & compounds Glaciated rocks — rocks whose surfaces have been smoothed, furrowed, or striated, by the action of ice.