(redirected from Plastrons)
Also found in: Thesaurus, Medical, Encyclopedia.
Related to Plastrons: Turtle shell


1. A metal breastplate worn under a coat of mail.
2. A quilted pad worn by fencers to protect the torso and side.
3. A trimming on the front of a bodice.
4. The front of a man's dress shirt.
5. The front panel of the tunic of a uniform, usually of a different color than the rest.
6. Zoology The ventral part of the shell of a turtle or tortoise.

[French, from Old French, from Old Italian piastrone, augmentative of piastra, thin metal plate; see piaster.]

plas′tral (-trəl) adj.


(Zoology) the bony plate forming the ventral part of the shell of a tortoise or turtle
[C16: via French from Italian piastrone, from piastra breastplate, from Latin emplastrum plaster]
ˈplastral adj


(ˈplæs trən)

1. plate armor for the upper front part of the torso.
2. a quilted pad worn over part of the torso for protection while fencing.
3. an ornamental front piece of a woman's bodice.
4. the starched front of a shirt.
5. the ventral part of the shell of a turtle.
[1500–10; < Middle French < Italian piastrone, augmentative of piastra metal plate, piaster. See plaster]
plas′tral, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.plastron - the ornamental front of a woman's bodice or shirt
bodice - part of a dress above the waist
shirtfront - the front of a shirt (usually the part not covered by a jacket); "he had spilled catsup on his shirtfront"
2.plastron - the front of man's dress shirt
dress shirt, evening shirt - a man's white shirt (with a starch front) for evening wear (usually with a tuxedo)
shirtfront - the front of a shirt (usually the part not covered by a jacket); "he had spilled catsup on his shirtfront"
3.plastron - a metal breastplate that was worn under a coat of mail
breastplate, egis, aegis - armor plate that protects the chest; the front part of a cuirass
4.plastron - a large pad worn by a fencer to protect the chest
pad - a flat mass of soft material used for protection, stuffing, or comfort
5.plastron - (zoology) the part of a turtle's shell forming its underside
turtle - any of various aquatic and land reptiles having a bony shell and flipper-like limbs for swimming
exoskeleton - the exterior protective or supporting structure or shell of many animals (especially invertebrates) including bony or horny parts such as nails or scales or hoofs
zoological science, zoology - the branch of biology that studies animals
References in classic literature ?
I had myself a great silver bowl, with two goblets, and a plastron of Spanish steel.
When predators do attack, you might expect that as turtles, they would pull themselves into their shells, however their small plastrons preclude that ability, leaving large portions of flesh exposed.
After rejoins there are a total of 529 inscribed pieces with the following distribution: 511 turtle plastrons, 13 turtle carapaces, and 5 bovine scapulae; 345 pieces are intact.
This intricate structure suggests that spiracles on thrips function as plastrons (Moritz 1985, 1997).
We uniquely marked individuals by shell notching (Cagle, 1939) and sexed them based on the presence of relatively long pre-cloacal tail length and concave plastrons in males (Ernst and Lovich, 2009).
Certain small bugs bob and dive into streams and rivers with the help of plastrons, trapped films of air that coat their bodies.
Hawksbill turtles have been found ashore with several types of marine organisms attached to their shells and plastrons.
The silicone nanofilaments also trap a layer of air between them to create a permanent air layer, known as plastrons, which ensures that water never comes into contact with the polyester fabric.
Gopher tortoise plastrons (the bottom portion of shells) are continually in close contact with warm, damp soil because these turtles use burrows as general refugia (Auffenberg, 1969).
Although most of the bones used in this practice were mammal scapulae and turtle plastrons, fish bones were employed at several sites in the Three Gorges region (Cao 2004; Flad n.
Les chamanes hommes utilisaient des plastrons feminins, et depuis le debut du XXe siecle des parures feminines posees sur leur tete.