master joint
Geology
noun
A principal joint in a rock mass.
Origin
Mid 19th century.
- royal moth
- Royal National Lifeboat Institution
- Royal Naval Reserve
- Royal Navy
- royalness
- Royal Oak
- Royal Oak Day
- Royal Observatory
- royal octavo
- royal palm
- royal pardon
- royal patronage
- royal pendulum
- royal plural
- royal pole
- royal prerogative
- royal purple
- royal python
- royal quarto
- royal refugee
- royal road to
- royal sail
- Royal Scot
- Royal Shakespeare Company
- Royal Society