Bedrock is the solid rock layer under loose soil and sand at the Earth’s surface. It can also mean the most basic, important support for an idea or system.
“Bedrock” combines “bed,” meaning a base or layer where something rests, and “rock.” It arose in English to describe the rock that forms the “bed” of the land.
When people say “the bedrock of democracy” or “the bedrock of science,” they’re using a very literal image: the hard solid base under everything else. It’s a reminder that even abstract systems depend on something firm underneath.
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