Thymidine rhymes with:
pentamidine, clonidine, pentamidine, aberdeen, ardene, azidothymidine, clonidine, gabardine, histidine, jayewardene, mujahadeen, pentamidine, undine
Thymidine sounds like:
tandem, tandon, tanton, taunton, tendon, tinton, tomatino, tonton