(astrophysics, cosmology, astronomy, physics) The unknown portion of the Universe outside standard physics, including dark matter and dark energy.

Used other than figuratively or idiomatically: see married, sector.

(mathematics) An area on a plane bounded by two rays from the origin and a rectangular hyperbola.

(economics) The sector of the economy that principally uses raw materials produced by the primary sector for sale and use by other sectors.

(economics) The sector of the economy that principally provides goods and services to consumers using goods produced by the other sectors.

(economics) The sector of the economy that principally produces raw materials for use by other sectors.

Of or relating to a public sector.

Any government and all entities that are controlled or funded by it.

(astronomy) Synonym of zenith telescope

(computing) The use of a physical mark or hole to reference sector locations within a magnetic or optical recording medium.