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Glossary of Geology Terms
beginning with letter R
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raft Tweet Definition of raft Like Definition of raft on Facebook
noun
  1. A flat structure made of planks, barrels etc., that floats on water, and is used for transport, emergency, emergencies or a platform for swimmers.
  2. A flat-bottomed inflatable craft for floating or drifting on water.
  3. A large (but unspecified) number, a lot.
All we've ever got from you is a of promises.
verb
  1. (transitive) to convey on a raft
  2. (transitive) to make into a raft
  3. (intransitive) to travel by raft
razorback Tweet Definition of razorback Like Definition of razorback on Facebook
noun (Plural:razorbacks)
  1. A term used in the southeastern US for a thin feral pig. The term is borderline slang but is used as the nickname for the University of Arkansas athletic teams.
recent Tweet Definition of recent Like Definition of recent on Facebook
adjective ((compar): more recent, (superl): most recent)
  1. Happening a short while ago.
recharge Tweet Definition of recharge Like Definition of recharge on Facebook
noun (recharge, s, -)
  1. Water that has percolated from the ground surface to an aquifer.
verb (recharg, ing)
  1. (transitive) To charge an electric battery after its power has been consumed.
  2. (transitive) To reload a gun with ammunition.
  3. (transitive) To add or restore water to an aquifer.
reconnaissance Tweet Definition of reconnaissance Like Definition of reconnaissance on Facebook
noun (abbreviated as recce or recon)
  1. The act of scouting or explore, exploring (especially military or medical) to gain information.
record Tweet Definition of record Like Definition of record on Facebook
noun
  1. Information put into a temporary or permanent physical medium.
The person had a of the event in her memory in her brain.
The tourist's photographs and the tape of the police call provide a of the crime.''
  1. Any instance of a physical medium on which information was put for the purpose of preserving it and making it available for future reference.
We have no record of you making this payment to us.
  1. A vinyl disc on which sound is recorded and may be replayed on a phonograph.
I still like records better than CDs.
  1. (computing) A set of data relating to a single individual or item.
  2. The most extreme known value of some achievement, particularly in competitive events.
The heat and humidity were both new records.
The team set a new for most points scored in a quarter.
verb
  1. (transitive) To make a record of information.
I wanted to every detail of what happened, for the benefit of future generations.
  1. (transitive) Specifically, to make an audio or video recording of.
Within a week they had recorded both the song and the video for it.
  1. (transitive) To give legal status to by making an official public record.
When the deed was recorded, we officially owned the house.
  1. (intransitive) To fix in a medium, usually in a tangible medium.
  2. (intransitive) To make an audio, video, or multimedia recording.
regolith Tweet Definition of regolith Like Definition of regolith on Facebook
noun
  1. (geology) The layer of loose rock, resting on the bedrock, that constitutes the surface of most land (and the surface of the moon etc.).
replacement Tweet Definition of replacement Like Definition of replacement on Facebook
noun
  1. Some one or thing that takes the place of another; a substitute.
residual Tweet Definition of residual Like Definition of residual on Facebook
noun (plural residuals)
  1. a remainder left over at the end of some process
  2. (in plural) payments made to performers, writers and directors when a recorded broadcast is repeated
adjective
  1. of, relating to, or remaining as a residue
revolution Tweet Definition of revolution Like Definition of revolution on Facebook
noun
  1. A political upheaval in a government or nation state characterized by great change.
  2. The removal and replacement of a government.
  3. The turning of an object around an axis.
  4. In the case of celestial body, celestial bodies - the traversal of one body through an orbit around another body.
  5. A sudden, vast change in a situation or discipline.
Richter scale Tweet Definition of Richter scale Like Definition of Richter scale on Facebook
noun
  1. A logarithmic scale used to express the energy released by an earthquake, each increase of 1 representing a 32-fold increase in energy.
rift valley Tweet Definition of rift valley Like Definition of rift valley on Facebook
noun
  1. (geology) a graben structure between two tectonic plates which are opening relative to each other
  2. (geology) a mid-oceanic ridge system with central valleys
rotten Tweet Definition of rotten Like Definition of rotten on Facebook
adjective
  1. Rancid perishable items that have been overridden with bacteria and other infectious agents.
  2. Cruel or mean.

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