pred·ni·sone 
(prĕdnĭ-sōn′,-zōn′)
(prĕdnĭ-sōn′,-zōn′)n.
A synthetic corticosteroid, C21H26O5, derived from cortisone and used as an antiallergy, immunosuppressive, and anti-inflammatory drug.
[pre(gnane), a steroid (from PREGNANT1) + D(I-)1 + -(E)N(E) + (CORT)ISONE.]
- preselect
- preselection
- presell
- presence
- presence of mind
- present
- present
- presentability
- presentable
- presentableness
- presentably
- present arms
- presentation
- presentational
- presentative
- present-day
- Present-day English
- presentee
- presenteeism
- presenter
- presentient
- presentiment
- presentimental
- presently
- presentment