Contran rhymes with:
airtran, dextran, questran, spectran, systran, airtran, dextran, loran, questran, spectran, systran, zofran
Contran sounds like:
centram, centromin, centurion, chemetron, cintron, condren, condron, contrarian, conundrum, cosmodrome, counterman, countryman, countrymen