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

(Greek: measure)

hydrometrical
1. Made by means of a hydrometer; as, "hydrometric observations".
2. A reference to a hydrometer, or to the determination of the specific gravity of fluids.
3. Of or pertaining to measurement of the velocity, discharge, etc., of running water.
hydrometrograph
An instrument that measures and records the rate of water discharge from a pipe or an orifice.
hydrometry
1. The science and technology of measuring specific gravities, particularly of liquids.
2. Determination of the specific gravity of a fluid by means of a hydrometer.
hydrotimeter
An apparatus for testing the hardness of water.
hydrotimetry
1. Measuring the hardness of water.
2. Determining the concentration of cations; such as, calcium and magnesium in water.
hyetometer
hyetometrograph
1. A chart showing the distribution of rainfall over the earth, or any part of it.
2. An instrument used to measure and to record rainfall.
hyetometrography
A branch of meteorology that is involved with the measurements of the distributions of rainfall, and of its presentation graphically in charts, maps, etc.
hyetometry
hygrometer
1. A measuring instrument for measuring the relative humidity of the atmosphere.
2. Any of several instruments that measure atmospheric humidity.

The most common type of hygrometer consists of two, side-by-side mercury or electronic thermometers, one of which has a dry bulb, and one of which has a bulb wrapped with a wet cotton or linen wick.

As water evaporates from the wet bulb, it absorbs heat from the thermometer, driving down its temperature reading.

The difference in temperature between the two thermometers is then used to calculate the relative humidity.

Other hygrometers make use of the temperatures at which dew forms and disappears to calculate the relative humidity.

—Based on information from
The American Heritage Science Dictionary;
Houghton Mifflin Company; Boston; 2005; page 310.
hygrometrical
1. Referring to hygrometry or made with, or according to, the hygrometer; such as, hygrometric observations.
2. Readily absorbing and retaining moisture; such as, hygrometric substances including potash.
hygrometrically
1. Characterized by hygrometry, or made with, or according to, the hygrometer; such as, hygrometric observations.
2. Referring to absorbing and retaining moisture; such as, hygrometric substances including potash.
hygrometry
1. The scientific study and calculation of the relative humidity of the atmosphere.
2. That branch of physics which relates to the determination of the humidity of bodies, particularly of the humidity of air and gases in the atmosphere, with the theory and use of the instruments constructed for this purpose.
hygrothermometer
An instrument which measures both temperature and relative humidity.
hypermetropia
An abnormal condition of the eye in which vision is better for distant objects than for near objects.

It results from the eyeballs being too short from front to back, causing images to be focused behind the retinas. Also known as "farsightedness".

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