|
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 |
|||
plastron
plastron
1. In Chelonia, the lower part of the shell, which is two-layered, consisting of bony plates corresponding to part of the shoulder girdle and abdominal ribs of primitive reptiles, covered by horny epidermal plates. It is joined to the carapace by a bridge between the legs. In some families it is hinged. 2. In some insects, a physical gill made up of hydrofuge hairs. Insects which use a plastron when diving under water are covered with a thick felt of hairs which are bent over at the tips. The hairs trap a layer of air which is continuous with the tracheal system, and surrounds the animal. 3. In Echinodermata, a flattened area between the mouth and anus, formed by the modification of the posterior interambulacrum. It is densely covered with spines. |
|
|
Cite this article
MICHAEL ALLABY. "plastron." A Dictionary of Zoology. 1999. Encyclopedia.com. 13 Feb. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "plastron." A Dictionary of Zoology. 1999. Encyclopedia.com. (February 13, 2012). http://www.encyclopedia.com/doc/1O8-plastron.html MICHAEL ALLABY. "plastron." A Dictionary of Zoology. 1999. Retrieved February 13, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-plastron.html |
|
plastron
plastron breast-shield XVI; ornamental front to a bodice; (nat. hist.) ventral part XIX. — F. — It. piastrone, augm. of piastra breastplate (spec. application of the sense ‘metal plate’, ‘lamina’) — L. emplastrum PLASTER.
|
|
|
Cite this article
T. F. HOAD. "plastron." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 13 Feb. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "plastron." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (February 13, 2012). http://www.encyclopedia.com/doc/1O27-plastron.html T. F. HOAD. "plastron." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved February 13, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-plastron.html |
|
plastron
plastron (plas-tron) n. the breastbone (sternum) together with the costal cartilages attached to it.
|
|
|
Cite this article
"plastron." A Dictionary of Nursing. 2008. Encyclopedia.com. 13 Feb. 2012 <http://www.encyclopedia.com>. "plastron." A Dictionary of Nursing. 2008. Encyclopedia.com. (February 13, 2012). http://www.encyclopedia.com/doc/1O62-plastron.html "plastron." A Dictionary of Nursing. 2008. Retrieved February 13, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-plastron.html |
|
plastron
|
|
|
Cite this article
AILSA ALLABY and MICHAEL ALLABY. "plastron." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 13 Feb. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "plastron." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 13, 2012). http://www.encyclopedia.com/doc/1O13-plastron.html AILSA ALLABY and MICHAEL ALLABY. "plastron." A Dictionary of Earth Sciences. 1999. Retrieved February 13, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-plastron.html |
|
plastron
plastron See carapace.
|
|
|
Cite this article
"plastron." A Dictionary of Biology. 2004. Encyclopedia.com. 13 Feb. 2012 <http://www.encyclopedia.com>. "plastron." A Dictionary of Biology. 2004. Encyclopedia.com. (February 13, 2012). http://www.encyclopedia.com/doc/1O6-plastron.html "plastron." A Dictionary of Biology. 2004. Retrieved February 13, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-plastron.html |
|
plastron
plastron •Aran, Arran, baron, barren, Darren, Karen, Sharon, yarran
•Biafran, saffron
•plastron • Saharan • Sumatran
•heron, perron
•rhododendron • chevron
•Aaron, Charon, Dáil Eireann
•apron
•matron, patron
•Libran
•decahedron, dodecahedron, octahedron, polyhedron, tetrahedron
•children • citron • grandchildren
•stepchildren • godchildren
•schoolchildren
•Byron, Chiron, environ, Myron, siren
•sporran, warren
•squadron • Cochran
•Andorran, Doran, Lauren, loran
•cauldron
•Kieran, Madeiran, schlieren
•Honduran, Van Buren
•Aldebaran • Auberon • Acheron
•Cameron, Decameron
•cateran, Lateran
•veteran
•dipteran, hemipteran
•lepidopteran • Lutheran
|
|
|
Cite this article
"plastron." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 13 Feb. 2012 <http://www.encyclopedia.com>. "plastron." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 13, 2012). http://www.encyclopedia.com/doc/1O233-plastron.html "plastron." Oxford Dictionary of Rhymes. 2007. Retrieved February 13, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-plastron.html |
|
Search over 100 encyclopedias and dictionaries:
HighBeam™ Research, Inc. © Copyright 2012. All rights reserved.
The Encyclopedia.com advertising network includes:
