Here's what rhymes with pterigium.
Words that almost rhyme with pterigium
bludgeon dudgeon erratum sudden button mutton androgen globin glutton piton nubbin dubbin unbutton scutcheon exciton escutcheon bellybutton caecum custom accustom jejunum buxom buncombe bunkum dumdum cementum humdrum colostrum corundum secundum conundrum carborundum