01 n. Things provided as means to some end.
pl.
Apparatus, Apparatuses
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1.
Things provided as means to some end.
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2.
Hence: A full collection or set of implements, or utensils, for a given duty, experimental or operative; any complex instrument or appliance, mechanical or chemical, for a specific action or operation; machinery; mechanism.
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3.
A collection of organs all of which unite in a common function; as, the respiratory apparatus.(Physiol.)