a group of machine parts that fit together to form a self-contained unit
"The technician spent hours calibrating each component of the engine assembly before it could go on the production line."
the act of constructing something (as a piece of machinery)
"The mechanic spent all day on the assembly of the new engine before it was ready for testing."
a public facility to meet for open discussion
"The town council decided to hold the next assembly in the old library so everyone could gather and discuss the new park plans openly."
a group of persons who are gathered together for a common purpose
"The town assembly voted unanimously to approve the new park budget after hours of heated debate."
a unit consisting of components that have been fitted together
"The new car's engine assembly was so tightly packed that it took hours to remove just one bolt."
A set of pieces that work together in unison as a mechanism or device.
"The broken transmission was just a disassembled assembly of gears and shafts waiting to be rebuilt."
In plain English: An assembly is a gathering of people who come together for a specific event or meeting.
"The general assembly met to discuss the community's budget."
Usage: Use assembly to describe a collection of parts joined together to form a functional object, such as a machine or piece of furniture. This term emphasizes the components working in unison rather than the act of putting them together.
The lower legislative body of each of a number of states of the United States, ("the Assembly").
"After years of debate in the state legislature, the final bill was passed by both the Senate and the Assembly before becoming law."
The word assembly comes from the Old French assemblée, which entered English via Anglo-Norman and Middle English. It originally referred to a gathering or coming together before evolving into its current meaning of an organized meeting.