Words That Rhyme With "Pneumothorax" :
2 syllables:
aurochs, barracks, borax, clorox, doormats, formats, Fornax, hyrax, murex, oryx, storax, styrax, thorax, Zurich's
3 syllables:
4 syllables:
haemothorax, hemothorax, hydrothorax, mesothorax, metathorax, pyothorax