Collodion rhymes with:
nickelodeon, cambodian, custodian, nickelodeon, odeon, odiaun, accordion, akkadian, amerindian, andean, antemeridian, arcadian, burgundian, cambodian, canadian, ceridian, chadian, circadian, claudian, comedian, custodian, davidian, didion, edwardian, floridian, freudian, garabedian, gedeon, gideon, gordian, guardian, indian, macfadyen, madyun, mcfadyen, median, meridian, meridien, mooradian, mouradian, nalbandian, nickelodeon, obsidian, odeon, odiaun, pancanadian, providian
Collodion sounds like:
caledonia, caledonian, calton, celadon, chilton, claudian, claudina, claudine, clayton, cleeton, coagulation, coalition, colden, colodny, colton, culleton, culton