- a specific variety of influenza, usually named for its point of dissemination or its animal vector: Hong Kong flu; swine flu.
Origin of flu
First recorded in 1830–40; shortened form
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for flus
Flustra, flus′tra, n. one of the commonest genera of marine Polyzoa.
Off the beaten track and anywhere in the Riff country his life would not be worth a flus (small copper coin).In the Tail of the Peacock
- the flu short for influenza
- any of various viral infections, esp a respiratory or intestinal infection
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 flus
1839, flue, shortening of influenza. Spelling flu attested from 1893. For choice of middle syllable, not a common method of shortening in English, Weekley compares tec for detective, scrip for subscription.
Online Etymology Dictionary, © 2010 Douglas Harper
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- See influenza.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.