- unbroken solid rock, overlaid in most places by soil or rock fragments.
- bottom layer; lowest stratum.
- any firm foundation or basis: Technical courses will be founded on a bedrock of sound, general education so as to produce a well-rounded engineer.
- the fundamental principles, as of a teaching, belief, or science: Let's strip away the cant and get down to bedrock.
- basic; fundamental.
- the solid unweathered rock that lies beneath the loose surface deposits of soil, alluvium, etc
- basic principles or facts (esp in the phrase get down to bedrock)
- the lowest point, level, or layer
