In the term oximetry,the suffix -metry means:

A) meter.
B) distance.
C) place.
D) measurement.

Oximetry

A procedure for measuring the oxygen saturation of the blood.

-metry

A suffix denoting the process of measuring or the science of measurement, used in words like "geometry" or "biometry".

Measurement

The process of obtaining a quantitative comparison between a predefined standard and an unknown quantity to determine its size, length, or amount.