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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

optical device go
a device for producing or controlling light

diffraction grating, grating
optical device consisting of a surface with many parallel grooves in it

noun.artifact

1 Subcategories

echelon go
a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset