Indication rhymes with:
vindication, adjudication, dedication, eradication, medication, rededication, vindication, acidification, adjudication, advocation, affrication, allocation, amplification, application, assocation, authentication, avocation, certification, cladification, clarification, classification, codification, collocation, communication, complication, convocation, decertification, dedication, deification, desiccation, detoxication, disqualification, diversification, domestication, duplication, edification, education, equivocation, eradication, excommunication, explication, extrication, falsification, fortification, gasification, gratification, identification, implication, intensification, intoxication, invocation, justification, magnification, medication, misallocation, misapplication, miscommunication, modification, multiplication, notification, nullification, ossification, pacification, personification, pontification, prefabrication, prevarication, prognostication, provocation, purification, qualification, quantification, ramification, ratification, reallocation, recertification, reclassification, rectification, rededication, replication, reunification, revocation, russification, sanctification, saponification, sophistication, suffocation, unification, verification, vilification, vindication
Indication sounds like:
indexation, indigestion, induction, intestine, intoxication