The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of numerous animals belonging to the phylum Chordata, having at some stage of development a dorsal nerve cord, a notochord, and gill slits and including all vertebrates and certain marine animals, such as the lancelets.
n. A member of the phylum Chordata; numerous animals having a notochord at some stage of their development; in vertebrates this develops into the spine
adj. Of such animals.
The Century Dictionary and Cyclopedia
Having the characters of the Chordata; pertaining to or resembling the Chordata: as, a chordate animal.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. any animal of the phylum Chordata having a notochord or spinal column
adj. of or relating to or characteristic of the Chordata
Word Usage
"In contrast, a region deep in the brain associated with reward processing, attention and motor movements - the chordate nucleus - was enlarged in subjects who were addicted to the drug."