Definition of "fluoroquinolone" [fluoroquinolone]

• Any of a group of broad-spectrum antibiotics derived from nalidixic acid. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Further, the US Food and Drug Administration has called for a ban on the use of the fluoroquinolone class of antibiotics in poultry."
• "When the new drug also had no impact, Askenasy was switched to a third drug: ciprofloxacin, a fluoroquinolone that has been on the market since the late 1980s."
• "Now the Food and Drug Administration has ordered makers of fluoroquinolone drugs — like Cipro, Levaquin, and Floxin — to add a “black box” warning that they can cause tendon ruptures."