cold sore


a vesicular eruption on the face, usually on or near the mouth, often accompanying a cold or a febrile condition; herpes simplex.

Nearby words

  1. cold pole,
  2. cold rubber,
  3. cold shoulder,
  4. cold shower,
  5. cold snap,
  6. cold spot,
  7. cold stage,
  8. cold start,
  9. cold steel,
  10. cold storage

Origin of cold sore

First recorded in 1905–10

Also called fever blister. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for cold sore

cold sore


a cluster of blisters at the margin of the lips that sometimes accompanies the common cold, caused by a viral infectionTechnical name: herpes labialis
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

Medicine definitions for cold sore

cold sore


A small blister occurring on the lips and face and caused by a herpes simplex virus.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.