| Webster's Online Dictionary |
| Part of Speech | Definition | |
| Expression | 1. The solid rock underlying superficial formations. Also Fig.[Websters]. | |
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| Expressions | Definition | ||
| Bed rock | The solid rock underlying superficial formations. Also Fig. Source: Webster's Revised Unabridged Dictionary. | ||
Source: compiled by the editor from various references; see credits. | Top | ||
| Expressions | Domain | Definition | |
| Bed rock | Environment | Consolidated rock below loose superficial material such as soil, glacial drift, or alluvium. Source: European Union. (references) | |
| Bed rock | Mining | Any solid rock exposed at the surface of the earth or overlain by unconsolidated material. Source: European Union. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||