The dark space in a glow discharge that is between the negative glow and the positive column.

The dark space in a glow discharge that is adjacent to the cathode.

(algebraic geometry) A locally ringed space of a subring k of a field K, whose points are valuation rings containing k and contained in K. They generalize the Riemann surface of a complex curve.

Any of the immunological spaces between the arteries and veins (not capillaries) and pia mater that can be expanded by leukocytes.

Ice cream that has had most of the water removed from it by a freeze-drying process and been sealed in a pouch, and requires no refrigeration.

A Lorentzian manifold in Minkowski space which is the analogue of the sphere in ordinary Euclidean space.

A control character indicating where a line break may occur.

(computing) A style of computer keyboard, traditionally used on MIT Lisp machines, equipped with seven modifier keys and three shift keys, arranged to facilitate chording.

(functional analysis) A generalization of many standard function spaces such as Lᵖ spaces and Sobolev spaces.

(of text) Formatted so that there is one half of a blank line between each line of text