apparatus

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noun ap·pa·ra·tus \ˌa-pə-ˈra-təs, -ˈrā-\

Definition of apparatus

plural

apparatuses

or

apparatus

  1. 1a :  a set of materials or equipment designed for a particular useb :  a group of anatomical or cytological parts functioning together mitotic apparatusc :  an instrument or appliance designed for a specific operation an apparatus for measuring vision

  2. 2 :  the functional processes by means of which a systematized activity is carried out the apparatus of society: such asa :  the machinery of governmentb :  the organization of a political party or an underground movement

Recent Examples of apparatus from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'apparatus'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of apparatus

Latin, from apparare to prepare, from ad- + parare to prepare — more at pare


APPARATUS Defined for English Language Learners

apparatus

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noun

Definition of apparatus for English Language Learners

  • : a tool or piece of equipment used for specific activities

  • : the organization or system used for doing or operating something


APPARATUS Defined for Kids

apparatus

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noun ap·pa·ra·tus \ˌa-pə-ˈra-təs, -ˈrā-\

Definition of apparatus for Students

plural

apparatuses

or

apparatus

  1. :  the equipment or material for a particular use or job gymnasium apparatus laboratory apparatus


Medical Dictionary

apparatus

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noun ap·pa·ra·tus \ˌap-ə-ˈrat-əs, -ˈrāt-\

Medical Definition of apparatus

plural

apparatuses

or

apparatus

  1. :  a group of anatomical and cytological parts having a common function the respiratory apparatus—see golgi apparatus



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