a city that, during a war, is officially declared demilitarized and open to occupation, and that will consequently not be defended, in order to spare it, under international law, from bombardment or other military attack.
a city or autonomous city-state that gives equal access and status to inhabitants and visitors without regard to religious, ethnic, racial, or national affiliation.
- Open circuit method
open circuit method n. A method for measuring oxygen consumption and carbon-dioxide production by collecting expired gas over a given period of time and measuring its volume and determining its composition.
noun, Education. 1. a spacious instructional area shared by several groups or classes in elementary school, permitting more individualized, less supervised project learning and movement of pupils from one activity to another. 2. a method or system utilizing such spacious classrooms and informal, flexible formats for learning and discussion.
noun, Astronomy. 1. a comparatively young, irregularly shaped group of stars, often numbering up to several hundred, and held together by mutual gravitation; usually found along the central plane of the Milky Way and other galaxies. noun a loose grouping of stars Usage Note astronomy open cluster A loose, irregular grouping of stars that originated […]
- Open-collar worker
job Someone who works at home or telecommutes. (1997-04-17)