compact

Concise Oxford English Dictionary © 2008 Oxford University Press:
compact1

▶adjective /kəmˈpakt/ 

• 1 closely set or packed together; dense.

  ■ having all the necessary components or features neatly fitted into a small space.

• 2 (compact of) archaic composed or made up of.

▶verb /kəmˈpakt/ exert force on to make more dense; compress.

■ archaic form by pressing the component parts together.

▶noun /ˈkɒmpakt/ a small flat case containing face powder, a mirror, and a powder puff.

– derivatives
compaction noun,
compactly adverb,
compactness noun,
compactor noun.

– origin ME: from L. compact-, compingere, from com- ‘together’ + pangere ‘fasten’.

Concise Oxford English Dictionary © 2008 Oxford University Press:
compact2 /ˈkɒmpakt/

▶noun a formal agreement or contract between two or more parties. ▶verb make or enter into (a formal agreement).

– origin C16: from L. compact-, compacisci, from com- ‘with’ + pacisci ‘make a covenant’; cf. pact.