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elasmobranch

[ih-las-muh-brangk, ih-laz-]
adjective
  1. belonging or pertaining to the Elasmobranchii, the subclass of cartilaginous fishes comprising the sharks and rays.
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noun
  1. an elasmobranch fish.
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Origin of elasmobranch

1870–75; < New Latin Elasmobranchii, equivalent to Greek elasm(ós) beaten metal (derivative of elaúnein; see elastic) + -o- -o- + -branchii, plural of -branchius, New Latin coinage based on Greek bránchia branchia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for elasmobranch

elasmobranch

noun
  1. any cartilaginous fish of the subclass Elasmobranchii (or Selachii), which includes the sharks, rays, dogfish, and skates
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adjective
  1. of, relating to, or belonging to the Elasmobranchii
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Also called: selachian

Word Origin for elasmobranch

C19: from New Latin elasmobranchii, from Greek elasmos metal plate + brankhia gills
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

elasmobranch in Science

elasmobranch

[ĭ-lăzmə-brăngk′]
  1. Any of numerous cartilaginous fishes of the subclass Elasmobranchii, having five to seven gill slits on each side, dermal denticles for scales, and a small respiratory opening (spiracle) behind each eye. The pectoral fins of elasmobranchs are often greatly enlarged. Elasmobranchs include the sharks, rays, and skates.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.