Words That Rhyme With "Endothecium" :
3 syllables:
4 syllables:
androecium, cetaceum, cymatium, gynoecium, hospitium, indicium, lutecium, lutetium, pancratium, podetium, promethium, silicium, solatium, spermatium, technetium
5 syllables:
americium, amphithecium, apothecium, cleistothecium, epithecium, hypothecium, nemathecium, paramecium, perithecium