na-adjective, noun which may take the genitive case particle 'no', noun
Describes something that is not multiple, composite, or divided; often used in technical or formal contexts for 'single' or 'unitary'.
この制度は単一の基準で運用されている。
This system is operated under a single standard.
It is difficult to explain with a single cause.
This factory only makes a single product.
It's important that the organization's chain of command be unified into one.
単一 means 'single' or 'unitary', the direct opposite of 多重's sense of being layered or multiple.
単一 means single or uniform, the opposite of 混成's sense of being made up of mixed, composite elements.
monoculture
monoculture