plural oximeters
: a noninvasive medical device for measuring continuously or intermittently the degree of oxygen saturation of circulating blood or a localized region of tissue
especially : pulse oximeter
oximetric adjective
oximetric sensors

Examples of oximeter in a Sentence

Recent Examples on the Web
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These finger oximeters are less sensitive in people with darker skin pigment, which likely leads to underestimates of severity. — Erika Yamazaki, The Conversation, 6 May 2026 Pulse oximeters, glucose monitoring systems, body scales and more are also available. — ABC News, 18 Apr. 2026 The problem is that decades of research show oximeters overestimate oxygen levels in people with darker skin. — Brad Porter, Forbes.com, 6 Mar. 2026 The oximeter reveals that her blood is only 90 percent saturated with oxygen, well below the healthy range of 95 to 100 percent. — Elizabeth Bruenig, The Atlantic, 12 Feb. 2026 See All Example Sentences for oximeter

Word History

Etymology

earlier, "an instrument for measuring atmospheric or dissolved oxygen," from oxi- (respelling of oxy by assimilation to the linking vowel -i-) + -meter

First Known Use

1942, in the meaning defined above

Time Traveler
The first known use of oximeter was in 1942

Browse Nearby Words

Cite this Entry

“Oximeter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oximeter. Accessed 7 Oct. 2026.

Kids Definition

oximeter

noun
: a medical device for measuring the amount of oxygen in blood circulating in the body

Medical Definition

oximeter

noun
: a noninvasive medical device for measuring continuously or intermittently the degree of oxygen saturation of circulating blood or a localized region of tissue
especially : pulse oximeter
oximetric adjective
oximetric sensors
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