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[kal-kahr] /ˈkæl kɑr/
noun, plural calcaria
[kal-kair-ee-uh] /kælˈkɛər i ə/ (Show IPA).
a spur or spurlike process.
Origin of calcar1
< Latin: spur, equivalent to calc-, stem of calx heel, calx + -ar, shortening of -āre, neuter of -āris -ar1


[kal-kahr] /ˈkæl kɑr/
noun, plural calcaria
[kal-kair-ee-uh] /kælˈkɛər i ə/ (Show IPA).
a reverberatory furnace for preparing frit.
1655-65; < Italian calcara < Late Latin calcāria lime-kiln, equivalent to Latin calc- lime (see chalk) + -āria -ary Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for calcar


noun (pl) calcaria (kælˈkɛərɪə)
a spur or spurlike process, as on the leg of a bird or the corolla of a flower
Word Origin
C19: from Latin, from calx heel
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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calcar in Medicine

calcar cal·car (kāl'kär')
n. pl. cal·car·i·a (kāl-kâr'ē-ə)

  1. A small spurlike projection from a structure.

  2. An internal septum at the level of division of arteries and confluence of veins when branches or roots form an acute angle.

  3. A dull spine or projection from a bone.

  4. A horny outgrowth from the skin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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calcar in Science
A spur or spurlike projection, such as one found on the base of a petal or on the wing or leg of a bird.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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