[ pred-nuh-sohn, -zohn ]
/ ˈprɛd nəˌsoʊn, -ˌzoʊn /

noun Pharmacology.

an analogue of cortisone, C21H26O5, used as an anti-inflammatory, immunosuppressive, and antineoplastic in the treatment of various diseases.

Origin of prednisone

1950–55; pre(gna)d(ie)n(e), a component of its chemical name + (cort)isone Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for prednisone

British Dictionary definitions for prednisone


/ (ˈprɛdnɪˌsəʊn) /


a steroid drug derived from cortisone and having the same uses

Word Origin for prednisone

C20: perhaps from pre (gnant) + -d (ie) n (e) + (cort) isone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for prednisone


[ prĕdnĭ-sōn′,-zōn′ ]


A synthetic steroid similar to cortisone that is used as an antiallergic, immunosuppressive, and anticancer drug and as an anti-inflammatory agent in the treatment of rheumatoid arthritis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.