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Definition of platelet

platelet

/ˈpleɪt.lət/
plate · let
Plural:platelets
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platelet Lexical Profile

platelet Game Scores & Validity

• noun

1

A small, colorless, disk-shaped cell fragment without a nucleus that circulates in mammalian blood and plays an essential role in blood clotting and wound repair.

Example

"The patient's blood test revealed a low platelet count, which explained why her bruises were taking so long to heal."

2

A minute, flat, plate-like particle, crystal, or structure (especially in geology, metallurgy, or materials science).

Example

"Under the electron microscope, the clay mineral appeared as tightly stacked hexagonal platelets."

Synonyms
View all synonyms for platelet

• Rhymes for platelet

• Nearby Words

plated lizard
plateful
plateglass
platelet
platelike
platform
platformer

Word Origin & Etymology

Coined in the late 19th century by combining 'plate' with the diminutive suffix '-let', originally translating the German scientific term 'Blutplättchen' ('little blood plate') used to describe the microscopic disk-shaped bodies in blood.

Cite this Entry

Wordmom. (2026). Definition of Platelet. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/platelet
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