broad-spec·trum

[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. 2013.
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Collins
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
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Broad-spectrum is always a great word to know.
So is zedonk. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
the offspring of a zebra and a donkey.
Example sentences
Antibiotic therapy with tetracycline or another broad-spectrum antibiotic is given at the beginning of treatment.
But now if you get an antibiotic, doctors will prescribe broad-spectrum antibiotics.
There are also broad-spectrum antibiotics and antimicrobials.
So persuading drug companies to make highly selective drugs instead of broad-spectrum ones may prove an uphill struggle.
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