/pred"neuh sohn', -zohn'/ , n. Pharm.
an analogue of cortisone, C 21 H 26 O 5 , used as an anti-inflammatory, immunosuppressive, and antineoplastic in the treatment of various diseases.
[ 1950-55; pre ( gna ) d ( ie ) n ( e ), a component of its chemical name + (CORT)ISONE ]