apparatus
noun
ap·pa·ra·tus
ˌa-pə-ˈra-təs
-ˈrā-
plural apparatuses or apparatus
1
a
: a set of materials or equipment designed for a particular use
b
: a group of anatomical or cytological parts functioning together
mitotic apparatus
c
: an instrument or appliance designed for a specific operation
an apparatus for measuring vision
2
: the functional processes by means of which a systematized activity is carried out
the apparatus of society
: such as
a
: the machinery of government
b
: the organization of a political party or an underground movement
Cite this Entry
“Apparatus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/apparatus. Accessed 1 Sep. 2026.
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