Words / O / Medicine

opportunistic

/ˌɒpətjuːˈnɪstɪk/

B2CEFR level
45/100Rarity: uncommon
TechnicalRegister

Medicine adjective

Describing an organism that causes disease chiefly when host defences are impaired.

Pneumocystis jirovecii is an opportunistic pathogen that emerges when the CD4 count falls below 200.

Topic: Advanced English in Medical English

Business adjective

Describing an acquisition or move made to exploit a favorable but unplanned circumstance.

The fund made an opportunistic bid for the distressed chain when its main rival withdrew from the auction.

Similar: speculative

Topic: Corporate strategy in Business English

Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.

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More medicine words: Advanced English