noun, noun which may take the genitive case particle 'no', na-adjective
Used as a noun, no-adjective, or na-adjective to describe something consisting of several layers, channels, or instances. Common in technical terms like 多重構造 (multilayer structure) and 多重通信 (multiplex communication).
This system is protected by multiple security layers.
The number of people struggling with multiple debts is increasing.
多数 describes a large number of countable items or people, whereas 多重 focuses on multiple layers or channels within a single structure rather than sheer quantity.
単一 means 'single' or 'unitary', the direct opposite of 多重's sense of being layered or multiple.
重複 (using the same 重 kanji) means 'duplication/overlap' of things that should be single, while 多重 describes a system deliberately built with many layers or channels.
multiplexing
multi-storied pagoda; many-tiered tower
multi-vehicle accident; multiple collision
multiple personality; split personality
multiplexing; multiprocessing
multiple citizenship; dual nationality
multiplex broadcasting
multiple integral
multiple inheritance
Compound of 多 (many) and 重 (layer, pile), literally 'many layers'. The reading is on'yomi (た + じゅう).
defence in depth; multiple safeguards; layered protection