17-ketosteroid

[-kē′tō-stîroid′, -stĕr-]
n.
  1. A steroid having a ketone group attached to its 17th carbon atom, especially any of those produced by the adrenal cortex and gonads and occurring normally in the urine.17-oxosteroid
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.