it means to get in a group or group together. for more information go to Dictionary.com
Redundancy is a characteristic of usage, not of words. It would be possible to use the word assembled in a redundant way, for example, the assembled structure was built by a skilled crew. Since it was built, it was assembled; you don't have to say it twice. However, you can also use the word assembled appropriately. I assembled my forces.
You can tell that I personally assembled the bookshelf by the way it leans to the left.
Constructed; built; made.
Everyone comes together
Collated Collected Assembled Consolidated Amassed
Assembled can be defined as to bring or call together into a group or whole. Assembled can also be defined as fitting parts and pieces together or to setup parts and pieces.
The word is spelled auditorium. The students assembled in the auditorium.
connected, joined, linked, assembled, mixed
The best possible antonym I could find was un-assembled and synonyms of the word.
The word assembled is a verb. It is the past tense of assemble.
assembled, arrayed, amassed, aggregated, accrued, accumulated
That is the feminine form of the word murkav (מורכב) which means made up of, composed of ; assembled, installed, affixed or complicated