flu·dro·cor·ti·sone 
(fl′drō-kôrtĭ-sōn′, -zōn′)
(fl′drō-kôrtĭ-sōn′, -zōn′)n.
A synthetic steroid, C21H29FO5, used in its acetate form to treat conditions such as Addison's disease that are characterized by insufficient production of adrenal hormones.
[Shortening of fluorohydrocortisone.]