na-adjective, noun which may take the genitive case particle 'no', noun
large quantity; massive amount; mass
Describes a very large amount or volume of something. Often used in compounds like 大量生産 (mass production) or 大量破壊 (mass destruction).
工場では大量の製品が作られている。
A large quantity of products is being made at the factory.
We need to analyze a massive amount of data.