a genus of rod- or coccus-shaped aerobic Gram-negative bacteria, certain species of which, as L. pneumophila, produce legionnaires' disease.
Origin of Legionella
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
noun plural -lae (-ˌliː)
any Gram-negative rod-shaped bacterium of the genus Legionella, including L. pneumophila, which causes legionnaire's disease
Word Origin for legionella
C20: New Latin, diminutive of legion, as in legionnaire's disease
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
A genus of gram-negative bacilli that includes the species that causes Legionnaires' disease.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.