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tunicate

[too-ni-kit, -keyt, tyoo-] /ˈtu nɪ kɪt, -ˌkeɪt, ˈtyu-/
noun
1.
Zoology. any sessile marine chordate of the subphylum Tunicata (Urochordata), having a saclike body enclosed in a thick membrane or tunic and two openings or siphons for the ingress and egress of water.
adjective, Also, tunicated
2.
(especially of the Tunicata) having a tunic or covering.
3.
of or pertaining to the tunicates.
4.
Botany. having or consisting of a series of concentric layers, as a bulb.
Origin
1615-1625
1615-25; < Latin tunicātus wearing a tunic. See tunic, -ate1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for tunicate
  • They are a kind of tunicate, underwater filter feeders.
British Dictionary definitions for tunicate

tunicate

/ˈtjuːnɪkɪt; -ˌkeɪt/
noun
1.
any minute primitive marine chordate animal of the subphylum Tunicata (or Urochordata, Urochorda). The adults have a saclike unsegmented body enclosed in a cellulose-like outer covering (tunic) and only the larval forms have a notochord: includes the sea squirts See also ascidian
adjective
2.
of, relating to, or belonging to the subphylum Tunicata
3.
(esp of a bulb) having or consisting of concentric layers of tissue
Word Origin
C18: from Latin tunicātus clad in a tunic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for tunicate
adj.

1760, from Latin tunicatus, past participle of tunicare "to clothe in a tunic," from tunica (see tunic). As a noun, from 1848.

Online Etymology Dictionary, © 2010 Douglas Harper
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tunicate in Science
tunicate
  (t'nĭ-kĭt)   
Any of various primitive marine chordate animals of the subphylum Tunicata, having a rounded or cylindrical body that is enclosed in a tough outer covering. Tunicates start out life as free-swimming, tadpolelike animals with a notochord (a primitive backbone), but many, such as the sea squirts, lose the notochord and most of their nervous system as adults and become fixed to rocks or other objects. Tunicates often form colonies.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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