# legionella

> English word · Noun · frequency rank #70,029

## Definitions
1. Bacteria of the genus Legionella.

## Etymology
From legion + translingual -ella, from Latin legio.
Constructed from "American Legion", after an outbreak of a then-unknown "mystery disease" (Legionnaires' disease) at a convention of the American Legion in Philadelphia in 1976.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/legionella