Words That Rhyme With "Diathermic" :

2 syllables:

permic, spermic, thermic

3 syllables:

endermic, euthermic

4 syllables:

blastodermic, ectodermic, endothermic, exothermic, homothermic, hypodermic, isothermic, pachydermic, polyspermic

5 syllables:

alexipharmic, homeothermic, homoiothermic