A character or glyph representing an idea, concept or object.

A thing considered the embodiment of a concept or object.

(linguistics) A type of noun whereby the form refers to the same entity independently of the context; a symbol arbitrarily denotes a referent. See also icon and index.

A summary of a dogmatic statement of faith.

(crystallography) The numerical expression which defines a plane's position relative to the assumed axes.

(programming) An internal identifier used by a debugger to relate parts of the compiled program to the corresponding names in the source code.

(telecommunications) A signalling event on a communications channel; a signal that cannot be further divided into meaningful information.

To symbolize.