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![](https://webarchive.library.unt.edu/eot2008/20081027134307im_/http://www.nci.nih.gov/images/spacer.gif)
| An increased number of thrombocytes (platelets) in the blood, without a known cause. Also called essential thrombocytosis. |
Previous Definitions: | esophagoscopy, esophagram, esophagus, ESR, essential oil | Next Definitions: | essential thrombocytosis, Essiac, ester, esterified estrogen, estradiol |
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