thermo-, therm-, thermi-, -thermia, -therm, -thermal, -thermic, -thermias, -thermies, -thermous, -thermy +

Loss of temperature sense or of the ability to distinguish between heat and cold; insensibility to heat or to temperature changes.

A standard test of pain response involves applying heat to the skin, and most of us perceive pain when the skin reaches an average critical temperature of 113 degrees F (45 degrees C), and everyone, with the exception of people with serious sensory dysfunction, perceives pain before his or her skin reaches a temperature of 116.6 degrees F (47 degrees C).

Even though there are three to four times fewer heat receptors than cold receptors in the human skin, freezing cold and burning hot sensation are both experienced exactly the same. Indeed, at 140 degrees F (60 degrees C) both the cold and heat pain nerve endings are stimulated, and after a point, there is no reason to make fine distinctions—all the brain has to know is that it is very painful!

1. The inability to distinguish between heat and cold.
2. Absence or loss of heat-perception; insensibility to heat.

1. That which promotes warmth; heating, calefacient.
2. A heating medicine, a calefacient; medicines that cause heat.

1. The branch of therapeutics concerned with the application of heat.
2. The treatment of disease by heat, or specifically by thermal baths.
3. The scientific study of heat as a therapeutic agent.

An obsolete form of therm.

An obsolete term meaning "to chafe" or "to make one hot with outrageous eating and drinking hot things".

An electric thermometer, especially used for recording slight variations of temperature.

An instrument for measuring sensibility to heat.

Excessive sensitiveness to high temperatures.

1. Decrease in the normal sensitiveness to heat.
2. Diminished sensitivity to hot or cold stimuli.

1. Of or pertaining to heat.
2. Of the nature of heat; thermal.

An electron which has been emitted from a heated body; such as, the hot cathode of an electron tube.

A reference to the emission of electrons as a result of heat.

The study and applications of thermionic emissions, or charged particles, from heated surfaces.

1. A device for determining temperature; also may be used to monitor control of temperatures.
2. A thermometer whose impedance varies with the ambient temperature and so is able to measure extremely small changes in temperature.
3. A reference in electronics to a temperature-sensitive semiconductor device possessing a negative temperature coefficient (i.e., resistance decreases as temperature increases); commonly used as a bolometer to measure temperatures and, indirectly, microwave energy levels.