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pinniped

[pin-uh-ped]
adjective
  1. belonging to the Pinnipedia, a suborder of carnivores with limbs adapted to an aquatic life, including the seals and walruses.
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noun
  1. a pinniped animal.
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Origin of pinniped

From the New Latin word Pinnipedia, dating back to 1835–45. See pinna, -i-, -ped, -ia
Related formspin·ni·pe·di·an [pin-uh-pee-dee-uh n] /ˌpɪn əˈpi di ən/, adjective, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for pinniped

pinniped

pinnipedian (ˌpɪnɪˈpiːdɪən)

adjective
  1. of, relating to, or belonging to the Pinnipedia, an order of aquatic placental mammals having a streamlined body and limbs specialized as flippers: includes seals, sea lions, and the walrus
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noun
  1. any pinniped animal
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Compare fissiped

Word Origin

C19: from New Latin pinnipēs, from Latin pinna feather, fin + pēs foot
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

Word Origin and History for pinniped

n.

1842, from Modern Latin Pinnipedia, suborder of aquatic carnivorous mammals (seals and walruses), literally "having feet as fins," from Latin pinna in secondary sense "fin" (see pin (n.)) + pes, genitive pedis "foot" (see foot (n.)).

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Online Etymology Dictionary, © 2010 Douglas Harper
pinniped in Science

pinniped

[pĭn′ə-pĕd′]
  1. Any of various carnivorous, aquatic mammals of the group Pinnipedia, which some believe is a suborder of the Carnivora but others consider a separate mammalian order. Pinnipeds have long, smooth bodies and finlike flippers for swimming. Seals and walruses are pinnipeds.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.