Definition of assembly noun from the Oxford Advanced American Dictionary

      

    assembly

     noun
    noun
    NAmE//əˈsɛmbli//
     
    (pl. assemblies)
     
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  1. 1 Assembly [countable] a group of people who have been elected to meet together regularly and make decisions or laws for a particular region or country State/legislative/federal/local assemblies Power has been handed over to provincial and regional assemblies. The national assembly has voted to adopt the budget. the California Assembly the UN General Assembly assembly elections an elected assembly
  2. 2[uncountable, countable] the meeting together of a group of people for a particular purpose; a group of people who meet together for a particular purpose They were fighting for freedom of speech and freedom of assembly. He was to address a public assembly on the issue. an assembly point (= a place where people have been asked to meet)
  3. 3 [countable, uncountable] a meeting of the teachers and students in a school to give information, discuss school events, or watch a performance together The vice principal was leading school assembly that day.
  4. 4[uncountable] the process of putting together the parts of something such as a vehicle or piece of furniture Putting the bookcase together should be a simple assembly job. a car assembly plant the correct assembly of the parts Some assembly required. (= instruction on the box of a toy, etc.)
See the Oxford Advanced Learner's Dictionary entry: assembly