noun Medicine/Medical.
an instrument for measuring the oxygen saturation of the hemoglobin in a sample of blood.

1940–45; ox- + -i- + -meter

oximetric [ok-si-me-trik] , adjective
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American Heritage
Medical Dictionary

oximeter ox·im·e·ter (ŏk-sĭm'ĭ-tər)
A device for measuring the oxygen saturation of arterial blood.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
In his demonstration, simulated patient data is fed to an oximeter and a respiratory monitor.
The pulse oximeter, which detects the light frequency of oxygen-saturated hemoglobin in the blood, slowly starts climbing.
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