All Words Glossary

Glossary of Geology Terms
beginning with letter E
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earthquake Tweet Definition of earthquake Like Definition of earthquake on Facebook
noun
  1. A shaking of the Earth, caused by volcanic activity or movement around geologic faults.
  2. A natural disaster.
effusive Tweet Definition of effusive Like Definition of effusive on Facebook
adjective
  1. gushy; unrestrained, extravagant or excessive in emotional expression
  1. profuse; overflowing
ejecta Tweet Definition of ejecta Like Definition of ejecta on Facebook
noun
  1. Material which has been ejected, especially from a volcano.
eluviation Tweet Definition of eluviation Like Definition of eluviation on Facebook
noun
  1. (context, soil science, countable) The sideways or downward movement of dissolved or suspended material within soil caused by rainfall
  2. (context, geology, uncountable) Creation of geological deposits (eluvial deposits) by in situ weathering or weathering plus gravitational movement or accumulation.
eluvium Tweet Definition of eluvium Like Definition of eluvium on Facebook
noun
  1. Residual deposits of soil, dust, and rock particles produced by the action of the wind.
endogenous Tweet Definition of endogenous Like Definition of endogenous on Facebook
adjective
  1. produced, originating or growing from within
  2. of a disease, caused by factors within the body
Eocene Tweet Definition of Eocene Like Definition of Eocene on Facebook
noun
  1. (geology) the Eocene epoch
adjective
  1. (geology) of a geologic epoch within the Paleogene period from about 56 to 34 million years ago
eon Tweet Definition of eon Like Definition of eon on Facebook
noun
  1. (also temporal on) Eternity.
  2. A period of 1,000,000,000 years.
  3. (geology): The longest time period used in geology.
  4. (informal, hyperbolically) A long period of time.
It's been eons since we last saw each other.
epicenter Tweet Definition of epicenter Like Definition of epicenter on Facebook
noun
  1. alternative spelling of epicentre, however it is more commonly referring to the point on the surface where the quake started, directly above the focus (the focus is the exact location below the surface where the quake originated).
epigenesis Tweet Definition of epigenesis Like Definition of epigenesis on Facebook
noun
  1. (biology) the theory that an organism develops by differentiation from an unstructured egg rather than by simple enlarging of something preformed
  2. (geology) changes in the mineral content of rock after its formation
epoch Tweet Definition of epoch Like Definition of epoch on Facebook
noun
  1. A particular period of history, especially one considered remarkable or noteworthy.
  2. A notable event which marks the beginning of such a period.
  3. (astronomy) A precise instant of time that is used as a reference point.
  4. (context, computing, uncountable) January 1, 1970, 00:00:00 GMT
ERA Tweet Definition of ERA Like Definition of ERA on Facebook
initialism
  1. (baseball) statistic for "Earned Run Average" which equals the number of earned runs allowed per nine innings pitched.
  2. w:Equal Rights Amendment, Equal Rights Amendment
  3. electrically reconfigurable array
erg Tweet Definition of erg Like Definition of erg on Facebook
noun
  1. The unit of work or energy, being the amount of work done by a dyne working through a distance of one centimeter.
erode Tweet Definition of erode Like Definition of erode on Facebook
verb (erod, ing)
  1. To eat into or away; to corrode; as, canker erodes the flesh.
  • Rhymes: (IPAchar, Rhymes:English:-əʊd, -əʊd)
erosion Tweet Definition of erosion Like Definition of erosion on Facebook
noun
  1. (context, uncountable) The result of having been being worn away or eroded, as by a glacier on rock or the sea on a cliff face
  2. (context, uncountable) The changing of a surface by mechanical action, friction, thermal expansion or contraction, or impact.
  3. (context, uncountable) Destruction by abrasive action of fluids.
  4. (mathematics, image processing) One of two fundamental operations in w:morphological image processing, morphological image processing from which all other morphological operations are derived.
  5. (dentistry) Loss of tooth enamel due to non-bacteriogenic chemical processes.
  6. (medicine) A shallow ulceration or lesion, usually involving skin or epithelial tissue.
erratic Tweet Definition of erratic Like Definition of erratic on Facebook
noun
  1. (geology) a rock moved by geologic forces from one location to another, usually by a glacier
adjective
  1. unsteady, random; prone to unexpected changes; not consistent
adverberratically
  1. in an erratic manner; unsteadily or randomly
    When I saw the other driver weaving erractically across the road, I decided to keep my distance.
erupt Tweet Definition of erupt Like Definition of erupt on Facebook
verb
  1. to violently eject
the volcano erupted, spewing lava across a wide area
  1. to spontaneous, spontaneously release pressure or tension
the crowd erupted in anger
  1. vomit
eruption Tweet Definition of eruption Like Definition of eruption on Facebook
noun
  1. A violent ejection, such as the spurting out of lava from a volcano
  2. A sudden release of pressure or tension
there was an of joy at the final whistle
  1. an infection of the skin resulting in a rash or blemishing
esker Tweet Definition of esker Like Definition of esker on Facebook
noun
  1. A long, narrow, sinuous ridge created by deposits from a stream running beneath a glacier.
etch Tweet Definition of etch Like Definition of etch on Facebook
verb (etches, etching, etched)
  1. To engrave a surface (especially of metal or glass) in order to produce a printing pattern.
  2. (context, metaphorically) To make a lasting impression.
The memory of 9/11 is etched into my mind.
eustasy Tweet Definition of eustasy Like Definition of eustasy on Facebook
noun (eustasies)
  1. A worldwide change in sea level
exogenous Tweet Definition of exogenous Like Definition of exogenous on Facebook
adjective
  1. (biology) produced or originating outside of an organism
  2. (medicine) of a disease: having an external cause
extrude Tweet Definition of extrude Like Definition of extrude on Facebook
verb (extrud, ing)
  1. To push or thrust out.
  2. To form or shape (a metal, plastic etc) by forcing it through a die or an opening.
extrusive Tweet Definition of extrusive Like Definition of extrusive on Facebook
adjective
  1. jutting out; extruding

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