• synonyms


[ren-uh-fawrm, ree-nuh-]
  1. kidney-shaped: a reniform leaf; hematite in reniform masses.
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Origin of reniform

From the New Latin word rēniformis, dating back to 1745–50. See reni-, -form
Related formssub·ren·i·form, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for reniform

Historical Examples

  • Globose glands are small globes, reniform glands are kidney-shaped.

    The Peaches of New York

    U. P. Hedrick

  • Listed as a large and beautiful variety with reniform glands.

  • A variety with reniform glands; recommended for central France.

  • In Hygrophorus they are rather irregular, reniform, or compressed in the middle.

    Fungi: Their Nature and Uses

    Mordecai Cubitt Cooke

  • Reniform, or Kidney-shaped (Fig. 131), like the last, only rounder and broader than long.

British Dictionary definitions for reniform


  1. having the shape or profile of a kidneya reniform leaf; a reniform mass of haematite
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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

reniform in Medicine


(rĕnə-fôrm′, rēnə-)
  1. Kidney-shaped.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

reniform in Science


[rĕnə-fôrm′, rēnə-]
  1. Shaped like a kidney. Used to describe certain minerals and certain leaves.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.