- the pandemic respiratory infection that spread throughout the world during 1917–18.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- Influenza that caused several waves of pandemic in 1918-1919, resulting in over 20 million deaths worldwide.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.