broad-spectrum

[brawd-spek-truhm]
adjective
1.
Pharmacology. noting an antibiotic effective against a wide range of organisms.
2.
having a wide range of uses.

Origin:
1950–55

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
broad-spectrum
 
n
(modifier) effective against a wide variety of diseases or microorganisms: a broad-spectrum antibiotic

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
But now if you get an antibiotic, doctors will prescribe broad-spectrum antibiotics.
So persuading drug companies to make highly selective drugs instead of broad-spectrum ones may prove an uphill struggle.
There are also broad-spectrum antibiotics and antimicrobials.
Antibiotic therapy with tetracycline or another broad-spectrum antibiotic is given at the beginning of treatment.
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