|
Search over 100 encyclopedias and dictionaries: |
Research categories | Follow us on Twitter |
Research categories
View all topics in the newsView all reference sources at Encyclopedia.com |
|||
cortex
cor·tex / ˈkôrˌteks/ • n. (pl. -ti·ces / -təˌsēz/ ) Anat. the outer layer of the cerebrum (the cerebral cortex), composed of folded gray matter and playing an important role in consciousness. ∎ an outer layer of another organ or body part such as a kidney (the renal cortex), the cerebellum, or a hair. ∎ Bot. an outer layer of tissue immediately below the epidermis of a stem or root. DERIVATIVES: cor·ti·cal / ˈkôrtikəl/ adj. |
|
|
Cite this article
"cortex." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "cortex." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O999-cortex.html "cortex." The Oxford Pocket Dictionary of Current English. 2009. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-cortex.html |
|
cortex
cortex in botany, term generally applied to the outer soft tissues of the leaves, stems, and roots of plants. Cortical cells of the leaves and outer layers of nonwoody stems contain chloroplasts, and are modified for food storage (usually in the form of starch) in roots and the inner layers of stems and seeds. Because of the combination of its soft texture (especially after cooking) and its role as a food storage tissue, the cortex is the predominant plant tissue eaten by humans and other animals. |
|
|
Cite this article
"cortex." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "cortex." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1E1-cortex.html "cortex." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-cortex.html |
|
cortex
cortex
1. (in botany) The tissue between the epidermis and the vascular system in plant stems and roots. It is composed of parenchyma cells and shows little or no structural differentiation. Cortex is produced by activity of the apical meristem. See also endodermis. 2. (in zoology) The outermost layer of tissue of various organs, including the adrenal glands (adrenal cortex), kidneys (renal cortex), and cerebral hemispheres (cerebral cortex). |
|
|
Cite this article
"cortex." A Dictionary of Biology. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "cortex." A Dictionary of Biology. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O6-cortex.html "cortex." A Dictionary of Biology. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-cortex.html |
|
cortex
cortex An outer layer.
1. In vertebrates, the cerebral cortex is a layer of grey matter lying above each cerebral hemisphere (cerebellum) in the brain. 2. In Heliozoa, an outer sphere of ectoplasm, often greatly vacuolated. 3. In some sessile, aquatic invertebrates, a fibrous outer layer of the periderm. 4. In some Porifera (e.g. Calcarea), an outer surface consisting of a syncitium formed from the interconnecting pseudopodia of amoebas. |
|
|
Cite this article
MICHAEL ALLABY. "cortex." A Dictionary of Zoology. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "cortex." A Dictionary of Zoology. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O8-cortex.html MICHAEL ALLABY. "cortex." A Dictionary of Zoology. 1999. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-cortex.html |
|
cortex
cortex In animal and plant anatomy, outer layer of a gland or tissue. Examples are the cortex of the adrenal glands; the renal cortex of a kidney; the cerebral cortex or outer layer of the brain; the cortical layers of tissue in plant roots and stems lying between the bark or epidermis and the hard wood or conducting tissues.
|
|
|
Cite this article
"cortex." World Encyclopedia. 2005. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "cortex." World Encyclopedia. 2005. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O142-cortex.html "cortex." World Encyclopedia. 2005. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-cortex.html |
|
cortex
cortex (kor-teks) n. (pl. cortices) the outer part of an organ, situated immediately beneath its capsule or outer membrane.
—cortical (kor-ti-kăl) adj. |
|
|
Cite this article
"cortex." A Dictionary of Nursing. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "cortex." A Dictionary of Nursing. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O62-cortex.html "cortex." A Dictionary of Nursing. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-cortex.html |
|
cortex
cortex An outer layer. In plants, tissue immediately below the epidermis but outside the vascular bundles.
|
|
|
Cite this article
MICHAEL ALLABY. "cortex." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "cortex." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O7-cortex.html MICHAEL ALLABY. "cortex." A Dictionary of Plant Sciences. 1998. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-cortex.html |
|
cortex
cortex
•axe (US ax), Backs, Bax, fax, flax, lax, max, pax, Sachs, sax, saxe, tax, wax
•co-ax • addax • Fairfax • Ceefax
•Halifax • Telefax • Filofax • banjax
•Ajax
•pickaxe (US pickax) • gravlax
•gravadlax • poleaxe • toadflax
•parallax
•battleaxe (US battleax)
•minimax • climax • Betamax • anthrax
•hyrax
•borax, storax, thorax
•syntax • surtax • beeswax • earwax
•Berks, Lourenço Marques, Marks, Marx, Parks, Sparks
•annex, convex, ex, flex, hex, perplex, Rex, sex, specs, Tex, Tex-Mex, vex
•ibex • index • codex • tubifex
•spinifex • pontifex • Telex • triplex
•simplex • multiplex
•ilex, silex
•complex • duplex • circumflex • Amex
•annexe • Kleenex • apex • Tipp-Ex
•haruspex • perspex • Pyrex
•Durex, Lurex, murex
•Middlesex • unisex • Semtex • latex
•cortex, Gore-tex, vortex
•vertex • Jacques
•breeks, idée fixe, maxixe, Weeks
|
|
|
Cite this article
"cortex." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "cortex." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O233-cortex.html "cortex." Oxford Dictionary of Rhymes. 2007. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-cortex.html |
|
Search over 100 encyclopedias and dictionaries:
HighBeam™ Research, Inc. © Copyright 2012. All rights reserved.
The Encyclopedia.com advertising network includes:
![Cortex - The Freaks [LYRICS]](http://i.ytimg.com/vi/eEh-r9a9jjM/0.jpg "Cortex - The Freaks [LYRICS]")
