- not typical; not conforming to the type; irregular; abnormal: atypical behavior; a flower atypical of the species.
Origin of atypical
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- not typical; deviating from or not conforming to type
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
Word Origin and History for atypicality
Online Etymology Dictionary, © 2010 Douglas Harper
- Not corresponding to the normal form or type; not typical.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.