• synonyms


[kos-tuh t, kaw-steyt]
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  1. Anatomy. having ribs.
  2. (of mosses) having a midrib or costa.
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Origin of costate

1810–20; < Latin costātus having ribs, ribbed, equivalent to cost(a) rib + -ātus -ate1
Related formsmul·ti·cos·tate, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for costate


  1. anatomy having ribs
  2. (of leaves) having veins or ridges, esp parallel ones
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Word Origin

C19: from Late Latin costātus, from Latin costa rib
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