noun which may take the genitive case particle 'no'
Describes materials or substances that have not been processed or purified, such as oil, sugar, or chemicals. Often used in technical or industrial contexts.
See also: 精製
Unrefined sugar is rich in minerals.
This factory imports crude oil.
Compound of 未 (mi, 'not yet') and 精製 (seisei, 'refining, purification'). The word follows a common pattern of forming adjectives meaning 'un-...' or 'not yet ...'.