platelet

noun

plate·​let ˈplāt-lət How to pronounce platelet (audio)
: a minute flattened body (as of ice or a mineral)
especially : a minute colorless disklike body of mammalian blood that assists in blood clotting by adhering to other platelets and to damaged epithelium

called also blood platelet, thrombocyte

Example Sentences

Recent Examples on the Web Bleeding triggers memories of the mysterious condition that sunk her platelet levels. Luca Evans, Los Angeles Times, 19 Sep. 2022 Tisdale additionally suggested platelet-rich plasma (PRP) treatment, in which a person's blood is drawn, processed, and then injected into the scalp. Wendy Geller, Peoplemag, 11 Jan. 2023 In addition, platelet-rich plasma therapies are also shown to help create new blood vessels, which can help treat some forms of erectile dysfunction. Amber Smith, Discover Magazine, 13 Oct. 2022 In order to treat the condition, it first must be recognized, and that means the surgeons need to carefully monitor platelet counts and, if the counts are going down, to look for any evidence of abnormal blood clotting. Dr. Keith Roach, oregonlive, 30 Nov. 2022 Fourth-year swingman Dylan Windler has been active for just one game because of a nagging ankle injury that recently required a platelet-rich plasma (PRP) injection. Chris Fedor, cleveland, 20 Nov. 2022 Harper did have a platelet-rich plasma injection in his elbow and perhaps more rest could solve the issue naturally. Dan Gelston, ajc, 7 Nov. 2022 Last month, Williams also received a platelet-rich plasma injection to accelerate the healing process. Adam Himmelsbach, BostonGlobe.com, 5 Nov. 2022 The consensus also specifies which medications and treatments have little to no science supporting their use, such as systemic vitamin A, oral or nasal zinc, oral steroids or steroid nasal sprays, and platelet-rich plasma nasal injections. Sandee Lamotte, CNN, 15 Oct. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'platelet.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1888, in the meaning defined above

Time Traveler
The first known use of platelet was in 1888

Dictionary Entries Near platelet

Cite this Entry

“Platelet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/platelet. Accessed 4 Feb. 2023.

Kids Definition

platelet

noun
plate·​let ˈplāt-lət How to pronounce platelet (audio)
: one of the tiny colorless disk-shaped bodies of the blood of mammals that assist in blood clotting

Medical Definition

platelet

noun
plate·​let ˈplāt-lət How to pronounce platelet (audio)
: a minute colorless anucleate disklike body of mammalian blood that is derived from fragments of megakaryocyte cytoplasm, that is released from the bone marrow into the blood, and that assists in blood clotting by adhering to other platelets and to damaged epithelium

called also blood platelet, thrombocyte

More from Merriam-Webster on platelet

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