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Glossary of Biological Terms
beginning with letter E
Browse the Biological Glossary
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ecology
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noun (ecologies, -)
  1. The branch of biology dealing with the relationships of organisms with their environment and with each other.
  2. The natural environment, all living and non-living things that occur naturally on Earth.
emergent
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adjective
  1. emerging; coming into view or into existence; nascent
  2. occurring unexpectedly or in an emergency
  3. Observable in a high-level view of a complex system but barely deducible from the description of its components
(wikipedia, emergence)
endocrinology
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noun
  1. (context, physiology) The study of the endocrine glands of the human body, the hormones produced by them, and their related disorders
envelope
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noun (plural envelopes)
  1. A paper or cardboard wrapper used to enclose and small, flat items, especially letters, for mailing.
  2. Something that envelops; a wrapping
  3. A bag containing the lifting gas of a balloon or airship.
  4. (geometry) A mathematical curve, surface, or higher-dimensional object that is the tangent to a given family of lines, curves, surfaces, or higher-dimensional objects.
  5. (electronics) A curve that bounds another curve or set of curves, as the modulation envelope of an amplitude-modulated carrier wave in electronics.
  6. (music) The shape of a sound, which may be controlled by a synthesizer or sampler.
  7. (computing) The information used for routing an email that is transmitted with the email but not part of its contents.
  8. (biology) An enclosing structure or cover, such as a membrane.
  9. (engineering) The set of limitations within which a technological system can perform safely and effectively.
eugenics
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noun
  1. The science of improving stock, whether human or animal.
  2. A social philosophy which advocates the improvement of human hereditary qualities through selective breeding.
evolution
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noun
  1. (context, general) A gradual process of development, formation, or growth, esp. one leading to a more advanced or complex form.
  2. (biology) The change in the genetic composition of a population over successive generations.
  3. (mathematics) The extraction of a root from a quantity.
  4. (military) One of a series of ordered movements.
evolutionary
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adjective
  1. of or related to evolution.
The history of marine mammals includes land-dwelling ancestors.
evolutionist
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noun
  1. A proponent of evolutionism
evolve
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verb to evolve
  1. To move in regular procession through a system.
  2. To develop.
    • 1939: w:P. G. Wodehouse, P. G. Wodehouse, Uncle Fred in the Springtime
    • : You will remove the pig, place it in the car, and drive it to my house in Wiltshire. That is the plan I have evolved.
exobiology
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noun
  1. The branch of biology dealing with extraterrestrial lifeforms.
extinct
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adjective
  1. (dated) extinguished, Extinguished, no longer alight (of fire, candles etc.)
Poor Edward's cigarillo was already .
  1. (Vulcanology) No longer erupting.
Most of the volcanos on this island are now .
  1. No longer used; obsolete, discontinued.
Luckily, such ideas about race are in current sociological theory.
  1. No longer in existence; having died out.
The dinosaurs have been for millions of years.
extinction
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noun
  1. The action of making or becoming extinct; annihilation.
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