ketosteroid

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ketosteroid

 [ke″to-ste´roid]
a steroid having ketone groups on functional carbon atoms.
17-k's steroids found in normal urine and in excess in certain tumors, which have a ketone group on the 17th carbon atom, and include certain androgenic and adrenocortical hormones.

ketosteroid

(kē′tō-stĕr′oid′, -stîr′-)
n.
A steroid, such as androsterone or estrone, that contains a ketone group.

ketosteroid

A steroid hormone to which an oxygen molecule has been attached, especially at the 17th carbon atom (C-17). An oxosteroid. A 17-ketosteroid is a steroid with a C-O (carbonyl) group at C-17. 17-ketosteroids are excreted in the urine as breakdown products of ANDROGENS and are present in excess in adrenal and gonadal overactivity.