Words that Rhyme with prothallus
2 Syllable Words
alice, balas, ballasts, callace, callous, callus, dallas, dallas', gallus, kallus, kalous, malice, palace, pallas
3 Syllable Words
daedalus, ilalis, ilalis'
4 Syllable Words
borealis, digitalis
Definition of prothallus
n. The minute primary growth from the spore of ferns and other Pteridophyta, which bears the true sexual organs; the oophoric generation of ferns, etc.