meter-, metro-, metr-, -metrical, -metrically, -metron, -metric, -metrist, -meter, -meters, -metry, -metre

(Greek: measure)

osseosonometer
osseosonometry
osteometry
oximeter
1. An instrument that is used to measure oxygen in a controlled space, such as an oxygen tank or incubator.
2. A photoelectric instrument used for measuring the degree of oxygen saturation in a fluid; such as, blood.
3. An instrument for determining, photoelectrically, the degree of oxygen saturation, or concentration, of a sample of blood.
oximetry
In medicine, the calculation of the oxygen saturation level of hemoglobin in a blood sample by using an oximeter.
oxyhemoglobinometer
An apparatus for measurement of the amount of oxygen in the blood.
ozonometer
An apparatus for determining the quantity of ozone in the atmosphere.
ozonometry
The measurement of atmospheric ozone by means of special ozonoscopic papers impregnated with substances which change color according to the ozone concentration in the air.
ozonoscopic
A reference to an instrument used to detect atmospheric ozone.
pachometer
pachymeter
paleothermometry
The investigation of the temperature of climates and oceans in past ages.
panhydrometer (s) (noun), panhydrometers (pl)
A water meter that can be used to measure the relative density of any liquid.
pantochronometer (s) (noun), pantochronometers (pl)
An instrument which functions as a compass, a sundial, or the universal time dial.
parameter, parameters
1. A variable quantity or value; specific uses include physics, a quantity that is used in a relationship involving several quantities and is held fixed, but in general it may be allowed to have different values.
2. In computer programming, data that can take different values at the execution time of a function, procedure, macro-instruction, or subroutine.

Only a specialist in mathematics or computing might know precisely what it means.

When the word does have a discernible meaning, it is usurping the place of a far simpler and more straightforward term; such as, boundaries, limits, or guidelines.

Related "measure" and "metric" words and charts: mens-; Metric Chart of Units; Metric-Length Converter; Metric Units and Links.