The number of items, usually words or numbers, that a person can retain and recall. Memory span is a test of working memory (short-term memory).

plural of space request

If one does not discipline a child, he or she will never learn obedience and good manners.

(transitive, intransitive) To format (a document) so that every other line is left blank, leaving sufficient whitespace for annotation (e.g. a teacher's corrections).

(anatomy) The space in the wrist bounded by the hamate, capitate, triquetral and lunate bones.

A dog of either of two different breeds (the English springer spaniel and the Welsh springer spaniel).

An opening made by the pupil in the eye.

A transparent form of calcite, used to demonstrate the polarisation of light.

(control engineering) A mathematical model of a physical system as a set of input, output and state variables related by first-order differential equations.

A manifold or topological space X on which G acts by symmetry in a transitive way.