cephalochordate

[sef-uh-loh-kawr-deyt]

ceph·a·lo·chor·date

[sef-uh-loh-kawr-deyt]
adjective
1.
belonging or pertaining to the Cephalochordata.
noun
2.
any chordate animal of the subphylum Cephalochordata, having fishlike characters but lacking a spinal column, comprising the lancelets.

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Cephalochordate has a plethora of syllables.
So is pneumonoultramicroscopicsilicovolcanoconiosis. Does it mean:
the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language.

Origin:
< Neo-Latin Cephalochordata; see cephalo-, chordate
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Collins
World English Dictionary
cephalochordate (ˌsɛfələʊˈkɔːdeɪt)
 
n
1.  any chordate animal of the subphylum Cephalochordata, having a fishlike body and no vertebral column; a lancelet
 
adj
2.  of, relating to, or belonging to the Cephalochordata

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
cephalochordate   (sěf'ə-lə-kôr'dāt')  Pronunciation Key 
A member of the subphylum Cephalochordata of the phylum Chordata, whose only living species are the lancelets. See more at lancelet. Compare hemichordate.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

cephalochordate

any member of the subphylum Cephalochordata of the phylum Chordata. Small, fishlike marine invertebrates, they probably are the closest living relatives of the vertebrates. There are about 20 species in two families, each with a single genus. Branchiostoma was formerly called Amphioxus, a name that is retained as an informal term. The other genus is Epigonichthys, also called Asymmetron. The genus Asymmetron is sometimes retained for some species

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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