9 Grammatical Pitfalls
early 15c., "land under the jurisdiction of a town, state, etc.," probably from Latin territorium "land around a town, domain, district," from terra "earth, land" (see terrain) + -orium, suffix denoting place (see -ory).
An alternative theory, somewhat supported by the vowels of the original Latin word, suggests derivation from terrere "to frighten" (see terrible); thus territorium would mean "a place from which people are warned off." Sense of "any tract of land, district, region" is first attested c.1600. Specific U.S. sense of "organized self-governing region not yet a state" is from 1799.
A geographic area occupied by a single animal, mating pair, or group. Animals usually defend their territory vigorously against intruders, especially of the same species, but the defense often takes the form of prominent, threatening displays rather than out-and-out fighting. Different animals mark off territory in different ways, as by leaving traces of their scent along the boundaries or, in the case of birds, modifying their calls to keep out intruders.