Medical Term:

microtonometer

Pronunciation: mī′krō-tō-nom′ĕ-tĕr

Definition: A small tonometer invented by Krogh, originally intended for use in animals but later adapted to humans, for determining the tensions of oxygen and carbon dioxide in arterial blood; it provides the means of bringing a small bubble of air into gaseous equilibrium with a sample of blood obtained by arterial puncture.

[micro- + G. tonos, tone, + metron, measure]

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