opportunistic

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opportunistic

 [op″or-too-nis´tik]
1. denoting a microorganism that does not ordinarily cause disease but becomes pathogenic under certain circumstances.
2. denoting a disease or infection caused by such an organism.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

op·por·tu·nis·tic

(op'ŏr-tū-nis'tik),
1. Denoting an organism capable of causing disease only in a host with lowered resistance, for example, by other diseases or by drugs.
2. Denoting a disease caused by such an organism.
Farlex Partner Medical Dictionary © Farlex 2012

opportunistic

adjective Relating to a microorganism—or the disease/infection it invokes—that is part of the normal non-pathogenic flora, which causes disease under certain conditions (e.g., by a compromised host immune defence).
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

opportunistic

Medtalk adjective Relating to a microorganism that is part of the normal nonpathogenic flora, which causes disease given the opportunity–eg, by a compromised host immune defense
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

op·por·tu·nis·tic

(op'ŏr-tū-nis'tik)
1. Denoting an organism capable of causing disease only in a host with lowered resistance; e.g., by other diseases or by drugs.
2. Denoting a disease caused by such an organism.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

opportunistic

  1. (of microorganisms) capable of causing disease in some circumstances but which under normal conditions are harmless.
  2. (of any species) exploiting new habitats.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Opportunistic

Causing disease only under certain conditions, as when a person is already sick or has a weak immune system.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
For opportunist eaters, this approach generally takes one of two forms (see Exhibit 3).
[bar] SNEAK: Opportunist thieves will spot an open window in warm weather
They are not as ego-driven as the opportunists, but they have a different way of seeing life in society.
Atwoli said the three are opportunists who can't take any risks.
Hyderabad (Telangana) [India], Jan 9 ( ANI ): All India Majlis-e-Ittehadul Muslimeen (AIMIM) President Asaduddin Owaisi on Tuesday called Shia Central Waqf Board chairman Wasim Rizvi a 'buffoon' and an opportunist for claiming that Madrasas bred terrorists.
Police are warning people to keep a close eye on their belongings to make sure they don't fall victim to opportunist thieves.
The reality is that Mr Farage is no more than a political opportunist. He offers no clear policies and shows no sign of understanding the global complications that face us.
These opportunist eaters hail from diverse backgrounds, cutting across age, income and household brackets.
MOTORISTS are being told not to leave cars unattended with the engine running to clear windscreens after an opportunist theft.
The staggering statistics show that since the start of the year opportunist thieves have been swiping plenty of stuff from student accommodation - with laptops and mobile phones the most likely to be taken.
He said that some of the opportunist shopkeepers have enhanced the prices of breads of different brands in the city merely on the hearsay and this is not acceptable to the members of Bread Association (Sindh Circle) at all.
OPPORTUNIST thieves stole pounds 8,000 worth of professional audio equipment that was left on show in a car overnight.