Words That Rhyme With "Quaternion" :
3 syllables:
Aryan, Barthian, Goethean, Goethian, guardian, Parthian, permeance, permeant, Permian, Sardian, Serbian, ternion, thorium, vermian
4 syllables:
Bismarckian, Capernaum, Falernian, gilbertian, Hibernia's, Hibernian, Lamarckian, luxuriant, Melburnian, Mozartean, nemertean