Etymologically
Log in

heater

This is the current revision of this entry, as edited by bogdan on 31 October 2026 at 07:20. This address is a permanent link to this version.
Changes in this edit History

Pronunciation

  • UK: /ˈhiːtə/[1]
  • US: /ˈhitɚ/[1]

Etymology

It is formed from English heat + -er, an agent noun from the verb heat.[2][3][4][5] Merriam-Webster traces it to Middle English heter, from heten (“to heat”) with the suffix -er.[6]

Earliest recorded meaning

A person or thing that heats: before 1500, in the Medulla Grammatice.[2] Etymonline dates the word to about 1500, of persons,[3] and Merriam-Webster to the 15th century.[6]

Semantic evolution

The general sense "one that heats" soon narrowed to particular devices.[2][3] Etymonline dates its use for devices to the 1660s,[3] and the OED records a pan for heating cane or maple juice in sugar-making from 1666.[2] Johnson (1755) knew it only as a piece of iron made hot and put into a box-iron to smooth and pleat linen.[7] The English Dialect Dictionary records such a heated iron, also for a tea-urn, from Scotland to Devon.[8] The likeness of that iron's shape gave heater the sense of a triangular structure (1797),[2] and in Cumberland a heater-bit was a triangular piece of ground where three roads met.[8] The 20th century added a car heater (1939) and a device that heats the cathode of a valve (1940),[2] and in American slang a gun (1929).[2][9] Etymonline records baseball slang heater, a fastball, by 1985.[3] Older slang used heaters for feet (1789) and, in the United States, heater for an overcoat (1913).[10]

Timeline

  • before 1500 – a person or thing that heats.[2]
  • 1666 – a pan for heating cane or maple juice in sugar-making.[2]
  • 1755 – Johnson: an iron made hot and put into a box-iron.[7]
  • 1789 – cant, heaters, feet.[10]
  • 1797 – a triangular structure shaped like a box-iron's heater.[2]
  • 1913 – US slang, an overcoat.[10]
  • 1929 – slang, a gun.[2]
  • 1939 – a device for heating the inside of a car.[2]
  • 1940 – a device that heats the cathode of a thermionic valve.[2]
  • 1985 – baseball slang, a fastball.[3]

Meanings

Noun

  1. A device that gives off heat to warm a room, a car or water, such as a stove, radiator or convector: We switched on the heater in the spare room.[9][6][2]
  2. In electronics, a wire or filament that heats the cathode of an electron tube indirectly.[9][6][2]
  3. A piece of iron heated and placed inside a box iron or urn.[6][2]
  4. A person whose work is to heat something, often in compounds: a rivet heater.[6][2]
  5. (slang, chiefly US) A pistol or gun.[9][2]

Word family

  • block heater
  • immersion heater
  • quartz heater
  • space heater

Usage notes

In Lancashire, Wiltshire, Somerset and Devon dialect the word also had the forms hetter, heytter and yetter.[8]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q r Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  3. ^ a b c d e f Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  6. ^ a b c d e f Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  7. ^ a b Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
  8. ^ a b c Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)
  9. ^ a b c d Collins English Dictionary (2023), Glasgow: HarperCollins
  10. ^ a b c Green, Jonathon (2010), Green's Dictionary of Slang, London: Chambers; digital ed. 2016–, https://greensdictofslang.com