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.

"Why, compared to what thou wast, Hugo, thou art as a deerskin coat to a steel plastron.-- Art thou not in love, man? Answer me!" "Something like, I fear me, beau sire,” replied the squire.

He therefore persuaded the Casa de Antillas to supply him with a hundred steel plastrons or corselets, with armlets and shoulder plates, and a hundred morions, or pikemen's helmets. This heavy armor was suitable […]

The plastron of a diving beetle is not directly a source of oxygen, but acts as a gill, acquiring oxygen from the surrounding water.

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.

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, 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.

Plastron

Meaning

Noun

Origin

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