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[suhl-fon-uh-mahyd, -mid, suhl-fuh-nam-ahyd, -id] /sʌlˈfɒn əˌmaɪd, -mɪd, ˌsʌl fəˈnæm aɪd, -ɪd/
noun, Pharmacology
Origin of sulfonamide
1900-05; sulfon(ic acid) + amide Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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sulfonamide in Medicine

sulfonamide sul·fon·a·mide (sŭl-fŏn'ə-mīd', -mĭd)

  1. Any of a group of organic sulfur compounds that includes the sulfa drugs.

  2. See sulfa drug.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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sulfonamide in Science
  (sŭl-fŏn'ə-mīd', -mĭd)   
Any of a group of organic sulfur compounds containing the radical SO2NH2. ◇ Certain sulfonamides known as sulfa drugs are used as antibiotics to treat bacterial infections.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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