Etymologically
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compact

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Compact, dense, is from Latin compāctus, put together; compact, an agreement, is from Latin compactum, from a different verb, compacīscī.[1][2][3]

Pronunciation

  • IPA: /kəmˈpækt/; /ˈkɒmˌpækt/, /kəmˈpækt/ (UK); /ˈkɑmˌpækt/, /kəmˈpækt/ (US)[4]

compact1 dense

Etymology

It is Middle English, through Old French compact or directly borrowed from Latin compāctus (“concentrated”),[1][3] the past participle of compingere, to fasten together, from com-, together, and pangere, to fix, fasten (see pact),[1][3][5] from PIE Proto-Indo-European *pag- (“to fasten”).[3]

Earliest recorded meaning

Closely and firmly united, of substances: before 1398, in Trevisa's translation of Bartholomaeus.[1][3]

Semantic evolution

The verb, to consolidate, pack together, is from before 1425 (the early 15th century),[1][3] and the noun, a compacted body, from 1601.[6][5] A small case for face powder is from 1921.[1][6] A compact car is from 1960, and the compact disc from 1979.[3]

Timeline

  • before 1398 – closely packed.[1]
  • before 1425 – to pack together (verb).[1]
  • 1601 – a compacted mass (noun).[6]
  • 1921 – a powder case.[1]
  • 1960 – compact car.[3]
  • 1979 – compact disc.[3]

Modern meaning

Adjective

  1. Closely and firmly packed together; dense.
  2. Taking up little space for its kind.
  3. Brief and to the point; concise.
  4. Having a short, solid build.

Verb

  1. To press or join firmly together.
  2. To make by pressing together, or to combine.

Noun

  1. A small case with a mirror, pressed powder and a puff.
  2. A car smaller than a medium-sized one.

Word family

  • compactly
  • compactness
  • compaction
  • compactor

compact2 agreement

Etymology

It is borrowed from Latin compactum (“agreement”), the noun use of the neuter past participle of compacīscī, to come to an agreement,[1][3][2] from com-, together, and pacīscī, to covenant, contract (see pact).[1][3]

Earliest recorded meaning

A covenant or contract between two or more parties: 1591, in Shakespeare's Henry VI, Part 1, in Barnhart and the OED, the 1590s in Etymonline.[1][6][3]

Semantic evolution

In a bad sense, a confederacy or plot, it is from 1590 and obsolete.[6] Social compact and family compact are from 1750.[6] A verb, to make a compact, was used from the mid-16th to the late 17th century.[7]

Timeline

  • 1590 – a plot.[6]
  • 1591 – an agreement.[6]
  • 1750 – social compact.[6]

Modern meaning

Noun

  1. An agreement or covenant.

References

  1. ^ a b c d e f g h i j k l Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  2. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  3. ^ a b c d e f g h i j k l Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  5. ^ a b Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  6. ^ a b c d e f g h i Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press