polar cap

polar cap
a chromophilic, saclike organelle occurring beneath the spore wall in the polar region of microsporidian protozoa. Called also polar capsule.

Medical dictionary. 2011.

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  • Polar Cap Absorption — Beziehung von Ionosphäre und Erdatmosphäre Elektronendichte und Ionenzusammensetzung in den oberen Ionosphärenschichten …   Deutsch Wikipedia

  • polar cap — noun A high latitude region of a celestial body that is covered by ice. Earths polar caps may melt if global warming continues …   Wiktionary

  • polar cap — (MESOZOA) The eight anterior cells in the nematogen …   Dictionary of invertebrate zoology

  • polar cap — 1. Geol. the icecap situated at either end of the earth s poles. 2. Astron. either of the two bright areas around the poles of the planet Mars, consisting of water ice and frozen carbon dioxide. [1890 95] * * * …   Universalium

  • polar cap — noun Astronomy a region of ice or other frozen matter surrounding a pole of a planet …   English new terms dictionary

  • polar cap — noun : a white spot at each pole of the planet Mars varying in size with the Martian seasons …   Useful english dictionary

  • Polar wind — is the permanent outflow of ionization from the polar regions of the magnetosphere. [http://amsglossary.allenpress.com/glossary/browse?s=p p=43 AMS Glossary] ] Ionospheric Plasma SourceThe ‘ground state’ of the ionosphere consists of the baseline …   Wikipedia

  • polar ice — noun Permanent sea ice found in the Arctic and Antarctic Syn: polar cap ice …   Wiktionary

  • Polar ecology — is the relationship between plants and animals in a polar environment. Polar environments are in the Arctic and Antarctic regions. Arctic regions are in the northern hemisphere, and it contains land and the islands that surround it. Antarctic is… …   Wikipedia

  • Polar ice cap — A polar ice cap is a high latitude region of a planet or moon that is covered in ice. There are no requirements with respect to size or composition for a body of ice to be termed a polar ice cap, nor any geological requirement for it to be over… …   Wikipedia

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