| 1. | a royal domain; kingdom: the realm of England. |
| 2. | the region, sphere, or domain within which anything occurs, prevails, or dominates: the realm of dreams. |
| 3. | the special province or field of something or someone: the realm of physics; facts within the realm of political scientists. |
realm (rělm) n.
[Middle English realme, from Old French, alteration (influenced by Old French reial, royal) of Latin regimen, government, from regere, to rule; see reg- in Indo-European roots.] |