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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

instrument go
a device that requires skill for proper use

arm, weapon, weapon system go
any instrument or instrumentality used in fighting or hunting

weapon of mass destruction, WMD, W.M.D. go
a weapon that kills or injures civilian as well as military personnel (nuclear and chemical and biological weapons)

nuclear weapon, atomic weapon
a weapon of mass destruction whose explosive power derives from a nuclear reaction

noun.artifact

3 Subcategories

atom bomb, atomic bomb, A-bomb, fission bomb, plutonium bomb go
a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239)
hydrogen bomb, H-bomb, fusion bomb, thermonuclear bomb go
a nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form helium
megaton bomb go
a nuclear weapon with an explosive power equivalent to one million tons of TNT