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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

measuring instrument, measuring system, measuring device go
instrument that shows the extent or amount or quantity or degree of something

timepiece, timekeeper, horologe go
a measuring instrument or device for keeping time

atomic clock go
a timepiece that derives its time scale from the vibration of atoms or molecules

caesium clock
an atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field

noun.artifact

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