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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

artifact, artefact go
a man-made object taken as a whole

instrumentation, instrumentality go
an artifact (or system of artifacts) that is instrumental in accomplishing some end

device go
an instrumentality invented for a particular purpose

electronic device go
a device that accomplishes its purpose electronically

tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve go
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope

gas-discharge tube
a tube in which an electric discharge takes place through a gas

noun.artifact

3 Subcategories

cathode-ray tube, CRT go
a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen
glow lamp go
a gas-discharge tube with a hot cathode
glow tube go
a gas-discharge tube consisting of a cold cathode and a diode in a tube filled with gas