Dictionary
lance•let
Pronunciation: (lans'lit, läns'-), [key]—
n.
any of several small, lancet-shaped burrowing marine animals of the subphylum Cephalochordata, having a notochord and bearing structural similarities to both vertebrates and invertebrates. Also called
amphioxus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.