A phenomenon or occurrence that is not normal.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "abnormality" in a sentence
"Determining which of those women have cancer, The Lancet said, also will require 358 breast examinations by ultrasound; 313 biopsies, including 209 in which part of the breast containing the abnormality is surgically removed, and 500 additional doctor's office visits."
"The keynote speaker wrote, "Antipsychotic drugs do not fix any known brain abnormality nor do they put brain chemistry back into balance.""
"When a fetal diagnosis of a fetal abnormality is found, your referring physician should call our Center at 1-800-468-8376 (1-800-IN-UTERO) where our nurse coordinator will obtain your initial medical data by telephone."