Digidyne rhymes with:
considine, dideoxycytidine, oxidyne, actodine, aerodyne, brisendine, celandine, ceradyne, compudyne, conradine, considine, dideoxycytidine, envirodyne, gardyne, geodyne, healthdyne, heterodyne, interdyne, iodine, jardine, microdyne, oxidyne, paradyne, pepperdine, rocketdyne, spectradyne, stanadyne, superheterodyne, technodyne, teledyne, teradyne, trimedyne, vandyne
Digidyne sounds like:
d'agostino, dagestan, dagostino, dakotan, daughton, dedication, deduction, degaetano, deighton, desiccation, destin, destiny, destitution, detection, detoxication, dichotomy, dickstein, dictation, diction, dictum, dideoxycytidine, digaetano, digestion, disdain, dissection, dissociation, doughten, dukedom, dustin, dustman, duston