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costa

[kos-tuh, kaw-stuh] /ˈkɒs tə, ˈkɔ stə/
noun, plural costae
[kos-tee, kaw-stee] /ˈkɒs ti, ˈkɔ sti/ (Show IPA)
1.
a rib or riblike part.
2.
the midrib of a leaf in mosses.
3.
a ridge.
4.
Entomology.
  1. Also called costal vein. a vein, usually marginal, in the anterior portion of the wing of certain insects.
  2. Also called costal margin. the anterior edge or border of the wing of certain insects.
Origin
1865-1870
1865-70; < Latin: rib, side. See coast
Related forms
pseudocosta, noun, plural pseudocostae.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for costae

costa

/ˈkɒstə/
noun (pl) -tae (-tiː)
1.
the technical name for rib1 (sense 1)
2.
a riblike part, such as the midrib of a plant leaf
Derived Forms
costal, adjective
Word Origin
C19: from Latin: rib, side, wall
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 costae
costa
Sp. costa "coast," from same L. source as English coast. Used in Britain from 1960s in jocular formations (costa geriatrica, costa del crime, etc.) in imitation of the names of Sp. tourist destinations.
Online Etymology Dictionary, © 2010 Douglas Harper
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costae in Medicine

costa cos·ta (kŏs'tə)
n. pl. cos·tae (-tē)

  1. Rib.

  2. A rodlike internal supporting organelle that runs along the base of the undulating membrane of certain flagellate parasites. Also called basal rod.


cos'tal adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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costae in Science
costa
  (kŏs'tə)   
Plural costae (kŏs'tē)
A rib or a riblike part, such as the midrib of a leaf or a thickened anterior vein or margin of an insect's wing.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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8
9
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