Plastron meaning

plăstrən
A metal breastplate worn under a coat of mail.
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A quilted pad worn by fencers to protect the torso and side.
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A trimming on the front of a bodice.
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The front of a man's dress shirt.
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The front panel of the tunic of a uniform, usually of a different color than the rest.
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(zoology) The ventral part of the shell of a turtle or tortoise.
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A metal breastplate worn under a coat of mail.
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A padded protector worn over the chest by fencers.
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A trimming like a dickey, worn on the front of a woman's dress.
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A starched shirt front.
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The lower, ventral part of the shell of a turtle or tortoise.
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The nearly flat part of the shell structure of a tortoise or other animal, similar in composition to the carapace.
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(fencing) A half-jacket worn under the jacket for padding or for safety.
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An ornamental front panel on a woman's bodice.
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A film of air trapped by specialized hairs against the body of an aquatic insect, and which acts as an external gill.

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

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Origin of plastron

  • French from Old French from Old Italian piastrone augmentative of piastra thin metal plate piaster

    From American Heritage Dictionary of the English Language, 5th Edition

  • From French plastron, from Italian piastrone, augmentive of piastra (“breastplate"), from Latin emplastrum (“plaster"), from Ancient Greek εμπλαστρον (emplastron), from εμπλαστος (emplastos, “daubed, plastered"), from εμπλασσειν (emplassein, “to mould, form").

    From Wiktionary