[ uh-sem-blee ]
See synonyms for assembly on
noun,plural as·sem·blies.
  1. an assembling or coming together of a number of persons, usually for a particular purpose: The principal will speak to all the students at Friday's assembly.

  2. a group of persons gathered together, usually for a particular purpose, whether religious, political, educational, or social.

  1. (often initial capital letter)Government. a legislative body, especially the lower house of the legislature in certain states of the U.S.: a bill before the assembly; the New York State Assembly.

  2. Military.

    • a signal, as by drum or bugle, for troops to fall into ranks or otherwise assemble.

    • the movement of forces, tanks, soldiers, etc., scattered by battle or battle drill, toward and into a small area.

  3. the putting together of complex machinery, as airplanes, from interchangeable parts of standard dimensions.

  4. Machinery. a group of machine parts, especially one forming a self-contained, independently mounted unit.: Compare subassembly.

Origin of assembly

1275–1325; Middle English assemblee<Middle French, literally, (that which is) assembled, feminine past participle of assembler to assemble

synonym study For assembly

1, 2. See convention.

Other words for assembly

Other words from assembly

  • pre·as·sem·bly, noun, plural pre·as·sem·blies.
  • re·as·sem·bly, noun, plural re·as·sem·blies.
  • self-as·sem·bly, noun, plural self·-as·sem·blies.

Words that may be confused with assembly Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use assembly in a sentence

  • He prohibited the assemblies in the cemeteries, and reiterated the edict of extermination against the Christians.

    The Catacombs of Rome | William Henry Withrow
  • A great number of persons were apprehended on the charge of conspiracy, and of holding illegal assemblies.

  • It was not, however, in the courts of law that eloquence displayed the greatest fire and passion, but in political assemblies.

  • These could only coexist with liberty; for a democracy is more favorable than an aristocracy to large assemblies of citizens.

  • There is neither sociability, or rational enjoyment, to be had in these very large assemblies.

    Alone | Marion Harland

British Dictionary definitions for assembly (1 of 2)


/ (əˈsɛmblɪ) /

nounplural -blies
  1. a number of people gathered together, esp for a formal meeting held at regular intervals

  2. the act of assembling or the state of being assembled

  1. the process of putting together a number of parts to make a machine or other product

  2. machinery a group of mating components before or after fitting together

  3. military

    • a signal for personnel to assemble, as by drum, bugle, etc

    • (as modifier): an assembly area

British Dictionary definitions for Assembly (2 of 2)


/ (əˈsɛmblɪ) /

nounplural -blies
  1. the lower chamber in various American state legislatures: See also House of Assembly, legislative assembly, National Assembly

  2. NZ short for General Assembly

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012