Definition (1):
The Assembly process is the variation of synthetic production in which materials or parts are combined without substantial changes.
Definition (2):
The Assembly process is a way of manufacturing a product where parts or materials are added in a sequence by various workers. For instance, A can put an engine in the car and send it to B, who can fix the doors. Then, B sends it to C for applying the wheels. Every worker has her/his post; the unfinished good comes to every worker by turn. The process makes it possible for the workers to put together more goods at a time, e.g. instead of putting together a car at one time, the workers can apply their skills on several cars the whole day. The Ford Motor Company developed this process at the beginning of the 20th Century. It started the automobiles’ mass production.
Definition (3):
The Assembly process is an arrangement of machines, equipment, and workers where the product to be assembled passes sequentially from one operation to another until complete. It is also known as an assembly line or production line. This process is most commonly applied to the products’ mass production.