[ suhl-fok-sahyd ]
/ sʌlˈfɒk saɪd /

noun Chemistry.

a brown liquid, C18H28O3S, insoluble in water, used as an insecticide synergist.
any of the compounds with the radical =SO, as dimethyl sulfoxide, (CH3)2SO.

Nearby words

  1. sulfonyl,
  2. sulfonylurea,
  3. sulfosalicylic acid,
  4. sulfosalicylic acid turbidity test,
  5. sulfotransferase,
  6. sulfur,
  7. sulfur bacteria,
  8. sulfur butterfly,
  9. sulfur dioxide,
  10. sulfur dye

Origin of sulfoxide

First recorded in 1890–95; sulf- + oxide Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for sulfoxide


[ sŭl-fŏksīd′ ]


Any of various compounds that contain a sulfinyl group.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.