The definition of an apparatus is a device or group of objects used for a specific purpose.
Scuba gear is an example of a breathing apparatus.
pl. -·ra′tus or -·ra′tuses
- the instruments, materials, tools, etc. needed for a specific use
- any complex device or machine for a specific use
- Physiol. a set of organs having a specific function: the digestive apparatus
- the means or system by which something is kept in action or a desired result is obtained; organization: the apparatus of government
- the notes, indexes, glossaries, etc. of a scholarly edition of a textin full apparatus crit′i·cus
Origin of apparatusL, a making ready, preparation ; from apparare, to make ready for ; from ad-, to + parare, prepare
nounpl. apparatus or ap·pa·rat·us·es
- a. An appliance or device for a particular purpose: an x-ray apparatus.b. An integrated group of materials or devices used for a particular purpose: dental apparatus. See Synonyms at equipment.
- a. The totality of means by which a designated function is performed or a specific task executed, as in a system of government.b. A political organization or an underground political movement. Also called apparat.
- Physiology A group or system of organs that collectively perform a specific function or process: the respiratory apparatus; the digestive apparatus.
- The critical and source material, usually including notes and a glossary, that accompanies a scholarly edition of a text.
Origin of apparatusLatin apparatus, preparation, from past participle of apparare, to prepare : ad-, ad- + parare, to prepare; see per&schwa;-1 in Indo-European roots.
(plural apparatuses or apparatus)
- Is occasionally used as an invariant plural:
- Look at all of those apparatus.
From Latin apparātus