oximetry

American  

[ok-sim-i-tree] / ɒkˈsɪm ɪ tri /

noun

Medicine/Medical.

1. the measuring of the percentage of oxygen-saturated hemoglobin in the blood by means of an oximeter. Readings below 90 percent may be indicative of impaired lung function or infection. In noninvasive pulse oximetry, a small device placed on a fingertip or earlobe uses light waves to measure the oxygen saturation in arterial blood.

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Etymology

Origin of oximetry

First recorded in 1940–45; ox- + -i- + -metry

Example Sentences

“Masimo is a leader in pulse oximetry and other patient monitoring solutions, which combined with its trusted brand and differentiated technology, will greatly strengthen our diagnostics franchise,” said Danaher CEO Rainer Blair in a statement.

From Barron's • Feb. 17, 2026

The verdict, relating to pulse oximetry features in the Apple Watch, is clearly a victory for Masimo.

From The Wall Street Journal • Nov. 17, 2025

A pulse oximetry measures a baby's oxygen levels, but is not currently part of the routine screening programme in the UK.

From BBC • Mar. 15, 2024

In 2020, Apple introduced its first watch with pulse oximetry.

From New York Times • Jan. 17, 2024

The trade court’s initial ruling in January 2023 found that Apple violated Masimo’s patent for pulse oximetry technology, and the October decision confirmed the earlier one.

From Los Angeles Times • Dec. 18, 2023