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plastron

American  
[plas-truhn] / ˈplæs trən /

noun

  1. a piece of plate armor for the upper part of the torso in front.

  2. Fencing. a quilted pad worn over part of the torso, for protection.

  3. an ornamental front piece of a woman's bodice.

  4. the starched front of a shirt.

  5. Zoology. the ventral part of the shell of a turtle.


plastron British  
/ ˈplæstrən /

noun

  1. the bony plate forming the ventral part of the shell of a tortoise or turtle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of plastron

1500–10; < Middle French < Italian piastrone, augmentative of piastra metal plate, piaster. See plaster


Vocabulary lists containing plastron

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Cones etched onto the substrate make the water droplets glide on an air-film gap, known as a plastron.

From Science Daily ● Apr. 16, 2024

The cotton poplin plastron shirt took 11 hours to make, according to the French house.

From Los Angeles Times ● Apr. 25, 2018

Turtles are characterized by a bony or cartilaginous shell, made up of the carapace on the back and the plastron on the ventral surface, which develops from the ribs.

From Textbooks ● Apr. 25, 2013

It’s perfectly normal for some tortoise species to have a penis that is half the length, or more, of the plastron.

From Scientific American ● Jun. 9, 2012

For example, nearly all males were mature when the plastron was 100 to 110 millimeters long, regardless of the age at which this size was attained.

From Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz by John M. Legler

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