1. pertaining to coins or money; nummary.
  2. having the shape of a coin; flat and circular or oval in form.
  3. Pathology. composed of round, flat disks: nummular skin lesions.

Origin of nummular

1725–35; < Latin nummul(ī) petty cash, small change (numm(us) coin + -ulī, plural of -ulus -ule) + -ar1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for nummular

Historical Examples of nummular

British Dictionary definitions for nummular


  1. shaped like a coin; disc-shaped; circular

Word Origin for nummular

C19: from Latin nummulus a small coin
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

nummular in Medicine


  1. Shaped like a coin; disk-shaped. Used especially of the thick mucous or mucopurulent sputum in certain respiratory diseases because of the discoid shape assumed when it is flattened on the bottom of a sputum mug containing water or transparent disinfectant.
  2. Arranged like stacks of coins. Used of red blood corpuscles in rouleaux formation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.