General Glossary (About the EoE)
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General Glossary
Published: October 2, 2013, 9:39 am
C Michael Hogan
Topic Editor: Peter Saundry
This general glossary compiles definitions of specialized terms used throughout the Encyclopedia of Earth. Each term listed below has had a blue link created to allow authors to link to the given term in any article without having the reader leave the page. The terms below are words or phrases for which an entire article on the Encylopedia of Earth is not necessarily envisioned:
- Allohexaploid: Cells holding six copies of each chromosome
- Anuran: An amphibian that has limbs but no tail (includes all frogs and toads)
- Arheic: Region that generates no significant surface water runoff
- Atomic number: The number of protons in the nucleus of a given atom
- Benthopelagic: Organisms inhabiting the lower portion of the water column in surface waters.
- Calcareous: Soils which are high in limestone content.
- Catchment: The entire area of a hydrological drainage basin
- Cirque: An amphitheatre-shaped valley head, formed by glacial erosion
- Demersal: An organism living at the bottom of a surface water system
- Diadromous: Fish that migrate between seawater and freshwater
- Diploid: Cells holding two copies of each chromosome
- Distributary: Stream channel that branches off from a river mainstem
- Endothermic: A process or reaction that releases energy, most often as heat
- Exothermic: A process or reaction that releases energy, most often as heat, light or sound
- Fossorial: An animal that engages in burrowing or living underground
- Intact: The condition of an ecological habitat being an undisturbed or natural environment
- Laterite: A soil type rich in aluminum and iron, found in wet tropical zones
- Lentic: Surface waters which are essentially still, such as lakes, ponds or puddles
- Lotic; Surface waters which are in motion, such as springs, streams, rivers
- Mesic: Habitat characterized by moderate soil moisture
- Noble gas: Any of the elements with complete electron shells: helium, neon, argon, xenon, krypton, radon
- Post-glacial rebound: Rise of a land mass previously depressed by massive glacier in a prior ice age
- Potamodromous: Fish that migrate within a river system
- Siliceous: Soils which are crystalline in nature, chiefly silica, and typically acidic
- Tetraploid: Cells holding four copies of each chromosome
- Thermokarst: Irregular surace landforms resulting from the thawing of ice-rich permafrost
- Ultramafic: Rock that is elevated in iron and magnesium, and low in potassium
- Versant: A region of land sloping in one general direction.
- Vicariance: Formation of a physical barrier that splits a biological taxon range, blocking gene flow or dispersal
- Wind pruning: A process where trees have an asymmetric form due to persistant high winds from a predominant direction
- Xeric: Arid land receiving less than 25 centimeters of rainfall annually
Notes:
Authors wishing to add to this list should:
- Determine that the term has not been previously added to the glossary under a similar name
- Make sure the glossary term has been properly added to at least one article