com·pact1 • adj. / kəmˈpakt; käm-; ˈkämˌpakt/ 1. closely and neatly packed together; dense: a compact cluster of houses. ∎ having all the necessary components or features neatly fitted into a small space: a compact car. ∎ (of a person or animal) small, solid, and well-proportioned. ∎ (of speech or writing) concise in expression. 2. (compact of) archaic composed or made up of. • v. / kəmˈpakt; käm-/ [tr.] (often be compacted) exert force on (something) to make it more dense; compress: the soil may be compacted by iron oxide. ∎ [intr.] (of a substance) become compressed in this way: the snow hardened and compacted. ∎ archaic form (something) by pressing its component parts firmly together. ∎ express in fewer words; condense: the ideas are compacted into two sentences. • n. / ˈkämˌpakt/ 1. a small flat case containing face powder, a mirror, and a powder puff. 2. something that is a small and conveniently shaped example of its kind, in particular: ∎ short for compact car. 3. Metallurgy a mass of powdered metal compacted together in preparation for sintering. DERIVATIVES: com·pac·tion / kəmˈpakshən/ n. com·pact·ly adv. com·pact·ness n. com·pac·tor / kəmˈpaktər; käm-; ˈkämˌpaktər/ (also com·pact·er) n. com·pact2 • n. / ˈkämˌpakt/ a formal agreement or contract between two or more parties. • v. / kəmˈpakt; käm-; ˈkämˌpakt/ [tr.] make or enter into (a formal agreement) with another party or parties: the Democratic Party compacted an alliance with dissident groups.
Hence compact sb. compact make-up powder, etc. XX. So compact vb. join firmly together. XVI. f. pp. stem of L. compingere.
An agreement, treaty, or contract.
The term compact is most often applied to agreements among states or between nations on matters in which they have a common concern.
The Constitution contains the compact clause, which prohibits one state from entering into a compact with another state without the consent of Congress.