• synonyms


noun, plural cal·car·i·a [kal-kair-ee-uh] /kælˈkɛər i ə/. Biology.
  1. a spur or spurlike process.
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Origin of calcar1

< Latin: spur, equivalent to calc-, stem of calx heel, calx + -ar, shortening of -āre, neuter of -āris -ar1


noun, plural cal·car·i·a [kal-kair-ee-uh] /kælˈkɛər i ə/. Glassmaking.
  1. a reverberatory furnace for preparing frit.
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Origin of calcar2

1655–65; < Italian calcara < Late Latin calcāria lime-kiln, equivalent to Latin calc- lime (see chalk) + -āria -ary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for calcar

Historical Examples

  • It is also called the calcar, or spur, and is furnished with cilia or bristles at its extremity.

    Marvels of Pond-life

    Henry J. Slack

  • The spur or calcar of the foot extends three-fourths of the distance between the foot and the tail.

  • A reverberatory furnace or calcar, for calcining or fritting the materials; 2.

  • On the pre-axial side of the hallux is the supplemental digit, the prehallux or calcar.

    The Vertebrate Skeleton

    Sidney H. Reynolds

British Dictionary definitions for calcar


noun plural calcaria (kælˈkɛərɪə)
  1. a spur or spurlike process, as on the leg of a bird or the corolla of a flower
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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

calcar in Medicine


n. pl. cal•car•i•a (kăl-kârē-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.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

calcar in Science


  1. A spur or spurlike projection, such as one found on the base of a petal or on the wing or leg of a bird.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.