Assembler/əˈsemblər/ Definition 1 of 3Pro Tip 1/3Physical Assembly Refers to someone putting parts together, often in a repetitive job. Ellie worked as an assembler, connecting wires in electronics. Pro Tip 2/3Not Just People 'Assembler' can also mean a machine that does the assembling process. This production line uses an automated assembler for quicker manufacturing. Pro Tip 3/3Industry Specific Used often in manufacturing contexts, like factories. The car assembler at the plant was responsible for the vehicle's final assembly.