ag·​gre·​gom·​e·​ter ˌa-gri-ˈgä-mə-tər How to pronounce aggregometer (audio)
plural aggregometers
: an instrument for measuring the aggregation of platelets in a sample of blood
Finally, a clinically easy-to-use and accurate bedside platelet aggregometer may help deliver optimal antiplatelet therapy to our patients.Steven P. Schulman, Journal of the American Medical Association, 20 Oct. 2004

Note: An aggregometer records the changes in the relative intensities of light passing through a sample of blood when it is treated with an agent (such as ADP or collagen) that acts to aggregate platelets.

aggregometry noun
The standard test of how readily platelets clump is called aggregometry. It is usually performed in a specialized laboratory and can take two to three hours. Andrew Pollack, New York Times, 20 July 2004

Word History


aggreg(ation) + -o- + -meter

First Known Use

1972, in the meaning defined above

Time Traveler
The first known use of aggregometer was in 1972

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Dictionary Entries Near aggregometer

Cite this Entry

“Aggregometer.” Dictionary, Merriam-Webster, Accessed 24 Jun. 2024.

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