opportunistic

play
adjective op·por·tu·nis·tic \ˌä-pər-tü-ˈni-stik, -tyü-\

Definition of opportunistic

  1. :  taking advantage of opportunities as they arise: such asa :  exploiting opportunities with little regard to principle (see principle 1) or consequences a politician considered opportunistic an opportunistic investmentb :  feeding on whatever food is available opportunistic feeders opportunistic bearsc :  being or caused by a usually harmless microorganism that can become pathogenic when the host's resistance is impaired opportunistic infections opportunistic diseases

opportunistically

play \ˌä-pər-tü-ˈni-sti-k(ə-)lē, -tyü-\ adverb

Recent Examples of opportunistic from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'opportunistic'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of opportunistic

1892


Medical Dictionary

opportunistic

play
adjective op·por·tu·nist·ic \-t(y)ü-ˈnis-tik\

Medical Definition of opportunistic

  1. 1:  of, relating to, or being a microorganism that is usually harmless but can become pathogenic when the host's resistance to disease is impaired

  2. 2:  of, relating to, or being an infection or disease caused by an opportunistic organism Pneumocystis carinii pneumonia and other opportunistic infections that kill AIDS patients—New York Times



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