Underheating

Part of speech: noun

Definitions

1. The insufficient maintenance of temperature causing inadequate warmth in an environment or system
2. The process whereby a space or device fails to achieve the required heating levels for optimal performance
3. A condition experienced when temperatures are not raised sufficiently to ensure comfort or functionality in a given area or equipment

Etymology: "Underheating" is simply "under-" attached to "heat", with the "-ing" ending turning the verb into a noun for the act or state of heating too little. The prefix "under-" comes from Old English and means "below" or "beneath" in its original spatial sense, as in "undergo" or "underground," and it has long been used to mean "insufficiently" or "not enough," as in "underfed" or "undercooked." "Heat" descends from Old English "hǣtu," so the whole word is a plain English compound built from two native elements, with no borrowed Latin or Greek parts. The word's concern is with inadequate warmth rather than with heat itself, which is why the prefix does the real work. Engineers and building managers tend to use it when describing a system that runs below its intended temperature, such as a boiler, a greenhouse, or a room that never reaches its set point. Because the parts are so transparent, the word needs little explanation, and its meaning follows directly from its construction.

Synonyms: insufficient heating, low heating, ineffective heating, inadequate heating, cooling