Therm Definition

thûrm
noun
A unit of heat equal to 100,000 British thermal units (1.054 × 108 joules).
American Heritage
A great calorie.
Webster's New World
A unit of heat equal to 1,000 great calories.
Webster's New World
A small calorie.
Webster's New World
A unit of heat equal to 100,000 British thermal units.
Webster's New World
suffix
An animal having a specified kind of body temperature.
Poikilotherm.
American Heritage

Other Word Forms of Therm

Noun

Singular:
therm
Plural:
therms

Origin of Therm

  • From Greek thermē heat from thermos warm, hot gwher- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Greek thermē heat from thermos warm, hot gwher- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek θερμός (thermos, “warm").

    From Wiktionary

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