apparatus

Etymology

It is borrowed from Latin apparātus (“preparation; equipment, tools”),^[2][3][4] a noun of state formed on the past participle of apparō (“to make ready, prepare”),^[2][3][5] from ad- (“to”) and parō (“to make ready”).^[2][3][6] Etymonline and the American Heritage Dictionary trace parō to Proto-Indo-European *perə- "to produce, procure".^[3][6] The same verb is behind prepare, pare, separate and disparate.^[5][7] An anglicized form apparate was used briefly in the early 17th century.^[5][2]

Earliest recorded meaning

The equipment or materials used for a particular purpose: before 1628, in Fulke Greville's Life of Sidney.^[2][4] A sense "preparation, preparatory arrangement" followed in 1638 and was obsolete by the early 18th century.^[2]

Semantic evolution

Johnson (1755) defined it as the things provided as means to an end, such as the tools of a trade, the furniture of a house or the equipage of war.^[8] In the 18th century it was applied especially to the instruments of scientific experiments (1728), to the organs that carry out a natural process in the body (1718), and to the notes and variant readings that accompany the critical edition of a text (1728), the critical apparatus or apparatus criticus.^[2] From the 17th century it could also mean the complex structure of an organization or system,^[2] while from 1935 it translated the Russian word for the Communist party machine.^[2] In Cornish dialect an apparatus was a kitchen stove, and in the Northumberland and Durham mines a machine for sorting small coal.^[9]

Timeline

• a1628 – equipment for a particular purpose.^[2][4]
• 1638–1722 – preparation (obsolete).^[2]
• 1718 – organs that carry out a bodily process.^[2]
• 1728 – instruments of scientific experiment; critical notes to a text.^[2]
• 1935 – the Communist party organization.^[2]

Modern meaning

Noun

1. The equipment, instruments or machinery needed for a particular task: firefighters in breathing apparatus.
2. The complex organization or system by which something is run: the apparatus of the state.
3. (anatomy) A group of organs or structures that together perform a particular function.
4. The notes, variant readings and other material that accompany the critical edition of a text.

Word family

• apparatus criticus
• Golgi apparatus

Related words

• apparat
• prepare
• pare
• separate
• parade
• apparel

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m n Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ a b c Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
5. ^ a b c Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
6. ^ a b The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
7. ^ Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
8. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
9. ^ Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)