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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
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope

noun.artifact

11 Subcategories

acorn tube go
a small vacuum tube
diode, rectifying tube, rectifying valve go
a thermionic tube having two electrodes
electron multiplier go
a vacuum tube that amplifies a flow of electrons
gas-discharge tube go
a tube in which an electric discharge takes place through a gas
klystron go
an electron tube used to generate or amplify electromagnetic radiation in the microwave region by velocity modulation
magnetron go
a diode vacuum tube in which the flow of electrons from a central cathode to a cylindrical anode is controlled by crossed magnetic and electric fields
pentode go
a thermionic tube having five electrodes
television-camera tube, television pickup tube go
a tube that rapidly scans an optical image and converts it into electronic signals
tetrode go
a thermionic tube having four electrodes
triode go
a thermionic vacuum tube having three electrodes
X-ray tube go
a vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays