/reuh zheem", ray-/ , or, sometimes, /-jeem"/ , n.
1. a mode or system of rule or government: a dictatorial regime.
2. a ruling or prevailing system.
3. a government in power.
4. the period during which a particular government or ruling system is in power.
5. Med. regimen (def. 1).
Also, régime .
[ 1770-80; régime regimen REGIMEN ]