Hemichordate definition

hĕmĭ-kôrdāt, -dĭt
Any of various mostly small, wormlike marine invertebrates once thought to be chordates but now considered more closely related to echinoderms. They may constitute their own phylum, the Hemichordata. The bodies of hemichordates are divided into a feeding organ called a proboscis, a ringlike section called a collar, and a trunk. Hemichordates have a gut, circulatory system, and nervous system and are filter feeders. Acorn worms and graptolites are hemichordates.
1
1
Any of various wormlike marine animals of the phylum Hemichordata, having gill slits and a structure similar to a notochord.
noun
0
0
Of or pertaining to a phylum (Hemichordata) of wormlike marine animals with visceral clefts and primitive nervous and circulatory systems.
adjective
0
0
Any hemichordate animal.
noun
0
0
Any of various wormlike marine animals of the phylum Hemichordata, having gill slits and a structure similar to a notochord.
noun
0
0
Advertisement
(biology) Any of many marine worms, of the phylum Hemichordata, that have a primitive notochord.
noun
0
0
Of, pertaining to, or characteristic of these animals.
adjective
0
0

Other Word Forms

Noun

Singular:
hemichordate
Plural:
hemichordates