domain
Cross references: 1. eminent domain do.main \do--'ma-n, d*-\ n [MF domaine, demaine, fr. L dominium, fr. dominus] 1a: complete and absolute ownership of land 1b: land so owned 2: a territory over which dominion is exercised 3: a sphere of influence or activity 4: the set of elements to which a mathematical or logical variable is limit ed; specif : the set on which a function is defined