Dictionary

broad–spectrum

adjective

Definition of BROAD-SPECTRUM

:  effective against a wide range of organisms (as insects or bacteria) <a broad–spectrum antibiotic>

First Known Use of BROAD-SPECTRUM

1952

broad–spectrum

adjective    (Medical Dictionary)

Medical Definition of BROAD–SPECTRUM

:  effective against a wide range of organisms (as insects or bacteria) <broad–spectrum antibiotics>—compare narrow-spectrum

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