| 释义 | 
		-os·tra·ca \ˈästrə̇kə also ˈȯs-\ noun plural combining form Etymology: New Latin, from Greek -ostraka (neuter plural of -ostrakos, from ostrakon shell) — more at oyster  : ones having (such) a shell — in names of taxa chiefly of crustaceans  < Arthrostraca >  < Conchostraca > |