noun ag·gre·gom·e·ter \ˌa-gri-ˈgä-mə-tər\

Definition of aggregometer




  1. :  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 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.


\ˌa-gri-ˈgä-mə-trē\ play 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

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of aggregometer

aggreg(ation) + -o- + -meter

First Known Use: 1972

Seen and Heard

What made you want to look up aggregometer? Please tell us where you read or heard it (including the quote, if possible).


capable of being understood in two ways

Get Word of the Day daily email!