Etymologically
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convection

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Pronunciation

  • /kənˈvɛkʃən/[1]

Etymology

It is borrowed from Late Latin convectiō (“a carrying or bringing together”),[2][3][4][5][6] a noun of action from Latin convehō (“to carry together”),[2][7][8] formed from com- (“with, together”) and vehō (“to carry”),[2][3][9] from Proto-Indo-European *wegh- (“to go, move, transport in a vehicle”).[2] Barnhart points out that despite the likeness in meaning, convey is not formed from the same parts, since it comes from con- and via (“road”).[7]

Earliest recorded meaning

The action of carrying, conveyance: 1623, in Cockeram's English Dictionarie,[8][7] a rare sense found only in the early 17th century.[4] Hoad calls this a casual instance and dates the word proper to the 19th century.[10]

Semantic evolution

The scientific sense, the carrying of heat or electricity by the movement of the heated or charged substance itself, as opposed to conduction, is recorded from 1834.[2][8] The Shorter Oxford and the Oxford Dictionary of English date the modern word to the mid 19th century,[4][11] and convection current appears in 1868.[8][2] Meteorology applied it to the rising of warm air and sinking of cool air that forms many clouds,[4][6][5] and geology to the slow circulation of material beneath the Earth's crust, thought to move the tectonic plates.[5] The adjective convectional, used of rain produced by convection, dates from the late 19th century.[4]

Timeline

  • 1623 – the action of carrying or conveying (rare).[8][7][4]
  • 1834 – the transfer of heat or electricity by the movement of the heated or charged substance.[2][8]
  • 1868 – convection current.[8][2]

Meanings

Noun

  1. The transfer of heat through a liquid or gas by the movement of its warmer parts into cooler regions.[5][6][4]
  2. (meteorology) The upward movement of warm air and downward movement of cooler air, which forms many clouds.[5][6][4]
  3. (geology) The slow circulation of material beneath the Earth's crust, thought to drive the movement of tectonic plates.[5]
  4. The act of carrying or conveying.[6][8]

Word family

  • convectional
  • convective
  • convectively
  • convection cell
  • convection oven

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  4. ^ a b c d e f g h Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ a b c d e f Collins English Dictionary (2023), Glasgow: HarperCollins
  6. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  7. ^ a b c d Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  8. ^ a b c d e f g h Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  9. ^ Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  10. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  11. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press