• synonyms


[plat-i-rahyn, -rin]
  1. Anthropology. having a broad, flat-bridged nose.
  2. belonging or pertaining to the primate group or superfamily Platyrrhini, comprising the New World monkeys, having a broad, flat nose and usually a long, prehensile tail.
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  1. a platyrrhine animal.
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Also plat·yr·rhin·i·an [plat-i-rin-ee-uh n] /ˌplæt ɪˈrɪn i ən/.

Origin of platyrrhine

1835–45; < New Latin Platyrrhini, plural of platyrhinus < Greek platy- platy- + -rhīn- -nosed, adj. derivative of rhī́s, stem rhīn- nose, snout; cf. catarrhine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for platyrrhine

Historical Examples

  • This family embraces the typical Platyrrhine Monkeys, and to it belongs the great majority of the American species.

    A Hand-book to the Primates, Volume 1 (of 2)

    Henry O. Forbes

  • From this feature these Monkeys have been described by some naturalists as Platyrrhine or Megarrhine.

  • The skull is dolichocephalic with an average cranial index of 72, prognathous and platyrrhine.

    Man, Past and Present

    Agustus Henry Keane

  • The platyrrhine and catarrhine monkeys have their primitive ancestor among extinct forms of the Lemuridae.

British Dictionary definitions for platyrrhine


platyrrhinian (ˌplætɪˈrɪnɪən)

  1. (esp of New World monkeys) having widely separated nostrils opening to the side of the face
  2. (of humans) having an unusually short wide nose
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  1. an animal or person with this characteristic
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Compare catarrhine

Word Origin

C19: from New Latin platyrrhinus, from platy- + -rrhinus, from Greek rhis nose
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

platyrrhine in Science


  1. Of or relating to the New World monkeys, distinguished from the Old World monkeys by a broad nasal septum and widely separated nostrils that generally open to the side.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.