therm-

¹

1. variant of thermo- before a vowel.

   thermesthesia.

therm

²

Or therme

[thurm]

noun

Physics.

1. any of several units of heat, as one equivalent to 1000 large calories or 100,000 British thermal units.

therm.

³

abbreviation

1. thermometer.

-therm

⁴

1. variant of thermo- as final element in compound words.

   isotherm.

therm

/ θɜːm /

noun

1. a unit of heat equal to 100 000 British thermal units. One therm is equal to 1.055 056 × 10 ⁸ joules

Word History and Origins

Origin of therm-¹

First recorded in 1885–90, therm is from the Greek word thérmē heat

Word History and Origins

Origin of therm-¹

C19: from Greek thermē heat

Example Sentences

The level has been set at $71.40 per barrel for oil and £0.54 per therm for gas.

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British wholesale gas prices have fallen from a peak of 640p per year in August 2022, to around 70p per therm.

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February prices per therm should drop 68% from January — still up from what customers paid in December 2022 and still higher than usual for February, historically, according to one SoCalGas executive, but a decline from last month’s dramatic jump in cost.

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The therm rate had jumped from a cost of $1.05 per unit in December to a whopping $3.45 in January, sending the owners of the restaurant — which relies on gas stoves for its wok-fired menu and oven-roasted barbecued meats — into a panic.

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In August, the UK benchmark price for gas for delivery the following day peaked at 550p a therm.

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