A characteristic sign or indication of the existence of something else: "The affair is a symptom of a global marital disturbance; it is not the disturbance itself” ( Maggie Scarf). See Synonyms at sign.
A sign or an indication of disorder or disease, especially when experienced by an individual as a change from normal function, sensation, or appearance.
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.