Vegetation rhymes with:
agitation, prestidigitation, accreditation, agitation, amputation, annotation, cohabitation, commutation, computation, connotation, dilatation, equitation, facilitation, habitation, hesitation, imitation, imputation, inhabitation, meditation, misinterpretation, palpitation, premeditation, prestidigitation, recitation, rehabilitation, reinterpretation, reputation, sanitation, visitation
Vegetation sounds like:
vacation, vasectomy, vastine, vaxstation, victim, visitation, viston, vocation