pteridology
pteridophyte pteridosperm pterins ptero- pterocarp pterodactyl pterodactyloid pterodactylous pteroid pteropod pteropodan pterosaur pterostigna pterygia pterygial pterygiod pterygiodus pterygium pterygote pterygotous pteryla pterylae ptisan pto ptochocracy ptomaine ptomaine poisoning ptosis ptotic |
pteridology /,pteri'dɔlədʤi/
danh từ
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