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heat index

   Also found in: Medical, Encyclopedia, Wikipedia 0.02 sec.
heat index
n.
A measurement of the air temperature in relation to the relative humidity, used as an indicator of the perceived temperature. Also called apparent temperature, humiture.

heat index
A measurement of the air temperature in relation to the relative humidity, used as an indicator of discomfort. The heat index is higher when high air temperatures occur with high humidity, and lower when they occur with low humidity. The heat index is based on studies of skin cooling caused by the evaporation of sweat. Also called apparent temperature.


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? Mentioned in ? References in periodicals archive
 
``We have no heat index in your forecast, so it's a big relief, because the high temperatures have come down.
The injunction directed the prison to provide fans, ice water, and daily showers when the heat index was 90 degrees or above, or to make such arrangements from May through September.
An added advantage to the user is that they can set a Heat Index alarm.
 
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