Words That Rhyme With "Parathyroid" :

2 syllables:

aroid, byroad, choroid, fibroid, highroad, hydroid, scaroid, scirrhoid, scleroid, sparoid, spheroid, spiroid, thyroid, toroid

3 syllables:

mormyrid, sciuroid

4 syllables:

hemispheroid, hyperthyroid, hypothyroid

5 syllables:

corticosteroid