Definition of prednisone
: a glucocorticoid C21H26O5 that is a dehydrogenated analog of cortisone and is used as an anti-inflammatory agent, as an antineoplastic agent, and as an immunosuppressant
Origin and Etymology of prednisone
probably from pregnane (C21H36) + diene (compound containing two double bonds) + cortisone
First Known Use: 1955
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