Plastron - What does it mean?
plastron | |
The nearly flat part of the shell structure of a tortoise or other animal, similar in composition to the carapace.
(fencing) A half-jacket worn under the jacket for padding or for safety.
An ornamental front panel on a woman's bodice.
* 1942 , Rebecca West, Black Lamb and Grey Falcon , Canongate 2006, p. 784,
A film of air trapped by specialized hairs against the body of an aquatic insect, and which acts as an external gill.
* 2013 , Jill Lancaster, Barbara J. Downes, Aquatic Entomology ,
* 2013 , Jon F. Harrison, Lutz T. Wasserthal (revisions & updates), 17: Gaseous Exchange'', R. F. Chapman, Stephen J. Simpson (editor), Angela E. Douglas (editor), ''The Insects: Structure and Function , 5th Edition,
plastron
English
(wikipedia plastron)Noun
(en noun)- I bought here a wedding dress perhaps twenty or thirty years old [...] a sequin plastron to be worn over the womb as a feminine equivalent to a cod-piece, and a gauze veil embroidered in purple and gold.
- The plastron of a diving beetle is not directly a source of oxygen, but acts as a gill, acquiring oxygen from the surrounding water.
page 45,
- Total independence of atmospheric air is possible only if insects have a permanent gas store or incompressible gas gill, called a plastron'. Unlike compressible gas stores, the volume of a ' plastron remains constant and it is incompressible.
page 535,
- The plastrons of other insects are generally less efficient than that of Aphelocheirus as they have a less dense hair pile from which the air is more readily displaced.