Words That Rhyme With "Proboscidean" :
3 syllables:
didion, Gideon, Lydian, Midian
4 syllables:
ascidian, Dravidian, euclidean, Floridian, meridian, obsidian, ophidian, Ovidian, quotidian, viridian
5 syllables:
clitoridean, enchiridion, nullifidian, postmeridian, pyramidion, solifidian