\Re*form"a*to*ry\ (-t?*r?), a.
Tending to produce reformation; reformative.

\Re*form"a*to*ry\, n.; pl. {-ries} (-r?z).
An institution for promoting the reformation of offenders.
      Magistrates may send juvenile offenders to
      reformatories instead of to prisons.     --Eng. Cyc.