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Etymology and origin of the English word motherboard

Confidence
Established
Formation
Compound
First attested
1965 Electronics magazine
Ultimate origin
Proto-Germanic *mōder,*bord
Etymology tree
inherited borrowed derived
Old English modor
English mother
English motherboard
From the same root
English motherfucker ← mother
English motherhood ← mother

Pronunciation

  • US: /ˈmʌðɚˌbɔɹd/[1]

Etymology

It is formed from English mother + board.[2][3][4] The first element is used in the sense of a main or parent thing on which smaller ones depend, and the OED's definition contrasts it with the smaller daughterboards that are plugged into it.[2]

Earliest recorded meaning

A printed circuit board carrying the main components of an electronic device, to which other boards are connected: 1965, in the magazine Electronics of 6 September.[2] Etymonline also dates the word to 1965,[3] while Merriam-Webster and the 1989 edition of the OED gave 1971 as the first date.[5][6]

Semantic evolution

The word belonged at first to electronics in general, for the main board of any device built from several circuit boards.[2] With the spread of personal computers it came to mean above all the main circuit board of a microcomputer, which is how Merriam-Webster and the American Heritage Dictionary define it.[5][7]

Timeline

  • 1965 – the main printed circuit board of an electronic device, carrying smaller boards.[2][3] Merriam-Webster dates the word to 1971.[5]

Meanings

Noun

  1. The main printed circuit board of a computer, holding the central processing unit and the basic circuitry, with slots for further boards: The technician replaced the motherboard after the power surge.[5][7][2]
  2. Any main circuit board of an electronic device to which smaller boards are attached.[2]

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  3. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  5. ^ a b c d Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  6. ^ Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ a b The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
Cite this entry

“Motherboard.” Etymologically, 2 Nov. 2026, etymologically.com/en/motherboard. Accessed 2 Nov. 2026.

Last edited on . ·