【来源及含义】Greek: feather [soft], down
【相关词根词缀】;Related "feather, feather-like; soft down, plumage" word units:;penna-,pinni-, pin-,plum-, -plume,pterido-,ptero-.
【同源单词】cryptoptile, haploptile, mesoptile, metaptile, neossoptile, protoptile
