Dictionary.com

diphtheroid

[ dif-thuh-roid, dip- ]
/ ˈdɪf θəˌrɔɪd, ˈdɪp- /
Save This Word!

adjective Pathology.
resembling diphtheria, especially in the formation of a false membrane in the throat.
noun
any bacterium, especially of the genus Corynebacterium, that resembles the diphtheria bacillus but does not produce diphtheria toxin.
QUIZ
QUIZ YOURSELF ON AFFECT VS. EFFECT!
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of diphtheroid

First recorded in 1860–65; diphther(ia) + -oid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

Medical definitions for diphtheroid

diphtheroid
[ dĭfthə-roid′ ]

n.
A local infection that resembles diphtheria, especially in the formation of a false membrane, but that is caused by a microorganism other than Corynebacterium diphtheriae.pseudodiphtheria
Any of various microorganisms resembling Corynebacterium diphtheriae.

Other words from diphtheroid

diphthe•roid′ adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK