The Collaborative International Dictionary
Leptocardian
Leptocardian \Lep`to*car"di*an\ (l[e^]p`t[-o]*k[aum]r"d[i^]*an), a. (Zo["o]l.) Of or pertaining to the Leptocardia. -- n. One of the Leptocardia.
Wiktionary
leptocardian
a. (context zoology English) Of or relating to the Leptocardia. n. (context zoology English) One of the Leptocardia.