Definition of "sublayer" []

• A layer underneath another (noun)
• A subunit of a layer (noun)

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• "The cover is shaped to resemble a precious stone, with the Acer logo floating on a polished midnight sapphire sublayer."
• "Like the northern continental interior, the tundra has a permanently frozen sublayer of soil known as permafrost."
• "So yes, those wars were fought for American geopolitical and economic interests but there was also a sublayer of reasoning for them, one of which would include freeing an oppressed people or stopping the spread of that oppression."