Definition of "compact"

compact¹

/ˈkɒmˌpækt/

noun
plural compacts
1. An agreement or contract.
  Quotations
  President Biden laid out an ambitious agenda on Wednesday night to rewrite the American social compact by vastly expanding family leave, child care, health care, preschool and college education for millions of people to be financed with increased taxes on the wealthiest earners.
  2021 April 29, Peter Baker, “Biden Seeks Shift in How the Nation Serves Its People”, in The New York Times‎
  After taking over this month as president of the U.S. Conference of Mayors, a nonpartisan coalition of city mayors, he urged members to sign a “crypto compact” calling on the federal government to eschew overly aggressive regulation of the industry.
  2022 January 25, David Yaffe-Bellany, “The Rise of the Crypto Mayors”, in The New York Times‎
verb
third-person singular simple present compacts, present participle compacting, simple past and past participle compacted
1. (intransitive) To form an agreement or contract.
  Quotations
  In return for the sovereign's protection, they compacted to police the content of public literature.
  2004, Ronan Deazley, On the Origin of the Right to Copy, page 94

compact²

/ˈkɒmˌpækt/

adjective
comparative more compact or compacter, superlative most compact or compactest
1. Closely packed, i.e. packing much in a small space.
  Quotations
  glass, crystal, gems, and other compact bodies
  1704, I[saac] N[ewton], “(please specify |book=1 to 3)”, in Opticks: Or, A Treatise of the Reflexions, Refractions, Inflexions and Colours of Light. […], London: […] Sam[uel] Smith, and Benj[amin] Walford, printers to the Royal Society, […]
2. Having all necessary features fitting neatly into a small space.
3. (topology, not comparable, of a set in a topological space) Such that every open cover of the given set has a finite subcover. In a Euclidean space this is equivalent to a Closed and bounded set.
4. Brief; close; pithy; not diffuse; not verbose.
5. (obsolete) Joined or held together; leagued; confederated.
  Quotations
  Thou fooliſh Frier, and thou pernicious woman / Compact with her that's gone:
  c. 1603–1604 (date written), William Shakespeare, “Measure for Measure”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act V, scene i], page 81
  a pipe of seven reeds, compact with wax together
  1622, Henry Peacham (Junior), The Compleat Gentleman
6. (obsolete) Composed or made; with of.
  Quotations
  A wandering fire, / Compact of unctuous vapor.
  1667, John Milton, “Book VIII”, in Paradise Lost. […], London: […] [Samuel Simmons], […]; republished as Paradise Lost in Ten Books: […], London: Basil Montagu Pickering […], 1873,
noun
plural compacts
1. A small, slim folding case, often featuring a mirror, powder and a powderpuff; that fits into a woman's purse or handbag, or that slips into one's pocket.
2. An automobile that is larger than a subcompact but smaller than an intermediate.
3. A broadsheet newspaper published in the size of a tabloid but keeping its non-sensational style.
  Quotations
  The Dundee Courier has announced the newspaper will be relaunching as a compact later this week. Editor Richard Neville said a "brighter, bolder" paper would appear from Saturday, shrunk from broadsheet to tabloid size.
  2012, BBC News, Dundee Courier makes move to compact‎
verb
third-person singular simple present compacts, present participle compacting, simple past and past participle compacted
1. (transitive) To make more dense; to compress.
  Quotations
  You need to excavate and remove the topsoil, line the subsoil with a geotextile, then lay and compact hardcore.
  2014 August 24, Jeff Howell, “Home improvements: gravel paths and cutting heating bills ”, in The Daily Telegraph (Property)‎
2. To unite or connect firmly, as in a system.
  Quotations
  The whole body fitly joined together and compacted by that which every joint supplieth.
  1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], Ephesians 4:16

Definition of "compact"

compact1

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compact2

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compact¹

compact²