(physics) vacuum; a space free of matter. / Used other than figuratively or idiomatically: see free, space.

Ordinary two- or three-dimensional space, characterised by an infinite extent along each dimension and a constant distance between any pair of parallel lines.

(mathematics) Euclidean space described by Cartesian coordinates.

(chemistry) the set of all possible stable molecules

(originally) A person in training to be a (generally military) astronaut, especially in science fiction.

(anatomy) A site within the larynx whose lateral border is the thyroid cartilage and posterior (dorsal) border is the pyriform sinus.

Alternative form of meatspace

Alternative form of meatspace

(functional analysis) A generalized Euclidean space in which mathematical functions take the place of points; crucial to the understanding of quantum mechanics and other applications.

(algebra, geometry, mathematics, topology) A set of elements called vectors, together with some field and operations called addition (mapping two vectors to a vector) and scalar multiplication (mapping a vector and an element in the field to a vector), satisfying a list of constraints.