a steroid drug derived from cortisone and having the same uses
Word origin
C20: perhaps from pre(gnant) + -d(ie)n(e) + (cort)isone
prednisone in American English
(ˈprɛdnəˌsoʊn)
US
noun
a chemical derivative, C21H26O5, of cortisone, but with fewer side effects, used in the treatment of arthritis and certain allergic and inflammatory disorders
Word origin
< pre(gnane), a steroid hydrocarbon (< pregnant + -ane: found in urine during pregnancy) + di-1 + -ene + cortisone