The solid rock underlying superficial formations. Also Fig.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). bed rock. Retrieved September 25, 2026, from http://smartdefine.org/bed_rock/definitions/1978990 |
| Chicago | Webster's. 2011. "bed rock" http://smartdefine.org/bed_rock/definitions/1978990 (accessed September 25, 2026). |
| Harvard | Webster's 2011, bed rock, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/bed_rock/definitions/1978990>. |
| MLA | Webster's. "bed rock" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/bed_rock/definitions/1978990> |