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modular

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Etymology and origin of the English word modular

Confidence
Established
Formation
Borrowing, Derivation
First attested
1798
Borrowed from
Latin modularis
Ultimate origin
Latin modus
Etymology tree
inherited borrowed derived
English module
English modular

Pronunciation

  • UK: /ˈmɒdjʊlə(ɹ)/[1]
  • US: /ˈmɑd͡ʒəlɚ/[1]

Etymology

In mathematics it is borrowed from New Latin modulāris,[2][3][4][5] which the OED finds in the phrase modularis ratio used by Roger Cotes in 1714;[6] Etymonline also allows borrowed from French modulaire.[7] The New Latin word is from Latin modulus (“a small measure”),[2][7][4] a diminutive of modus (“measure, manner”),[7] with the suffix -āris.[6][5] Etymonline traces modus to Proto-Indo-European *med- (“to take appropriate measures”).[7] In its other senses the word is probably formed from English module + -ar.[6][5]

Earliest recorded meaning

In mathematics, of or relating to a modulus: 1798 in Barnhart and Etymonline,[2][7] and 1815, in Hutton's Mathematical and Philosophical Dictionary, in the OED and Merriam-Webster.[6][5]

Semantic evolution

In 1842 the word was used in architecture of the module, the unit of measure of the classical orders, a use the OED marks as rare and obsolete.[6][3] The modern sense, built from standard units that can be combined in different ways, comes from building design: Barnhart and the OED date it to 1936.[2][6][7] It spread to furniture, to computer programs made of separate modules,[5] and since 1968 to educational courses made up of independent units of study.[6] A noun, a building made of prefabricated modules, is chiefly American and dates from 1969.[6]

Timeline

  • 1798 – in mathematics, relating to a modulus.[2][7]
  • 1842 – in architecture, measured by the module (obsolete).[6]
  • 1936 – built on a standard module; made of interchangeable units.[6][2]
  • 1968 – of a course made up of independent units.[6]
  • 1969 – noun, a building made of prefabricated modules.[6]

Meanings

Adjective

  1. Made of standard units or sections that can be joined or arranged in different ways: modular shelving for the garage.[5][6][8]
  2. Of a course of study, made up of separate units that can be combined in various ways.[6]
  3. Of a computer program, made up of separate modules.[5]
  4. (mathematics) Of or relating to a modulus.[5][6][8]

Noun

  1. (chiefly US) Something made of modules, especially a prefabricated building.[6]

Word family

  • modularly
  • modularity
  • unimodular
  • modular arithmetic

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  4. ^ a b Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
  5. ^ a b c d e f g h Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  6. ^ a b c d e f g h i j k l m n o p Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  7. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  8. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins

Related etymologies

Cite this entry

“Modular.” Etymologically, 31 Oct. 2026, etymologically.com/en/modular. Accessed 31 Oct. 2026.

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