Glaciation rhymes with:
appreciation, depreciation, differentiation, initiation, instantiation, negotiation, renegotiation, abbreviation, affiliation, alleviation, appreciation, appropriation, association, aviacion, aviation, conciliation, creation, d'aviation, delineation, denunciation, depreciation, deviation, differentiation, dissociation, exfoliation, expatriation, expropriation, foliation, humiliation, initiation, instantiation, irradiation, mediation, misappropriation, miscreation, negotiation, nucleation, procreation, pronunciation, radiation, reaffiliation, reconciliation, recreation, remediation, renegotiation, renunciation, repatriation, repudiation, retaliation, substantiation, variation
Glaciation sounds like:
gallstone, gholston, glickstein, glisten, golston, goulston