Etymologically
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abacus

Etymology and origin of the English word abacus

History

Pronunciation

  • IPA: /ˈæb.ə.kəs/[1]

Etymology

It is borrowed from Latin abacus (“counting board”),[2][3][4] from Ancient Greek ἄβαξ (ábax, “counting table, board for drawing”), whose stem abak- appears in the genitive abakos.[3][4][2] The Greek word is often traced to a Semitic source such as Hebrew ʾābāq “dust”,[2][4] but Etymonline notes that Beekes and others find this connection “semantically weak” and treat the word as of uncertain origin.[4]

Earliest recorded meaning

A board or tray strewn with sand on which figures and diagrams could be drawn and calculations traced (before 1387).[5][4][3]

Semantic evolution

The first abacus was literally dusty: a sand-covered board on which marks could be made and wiped away.[2][4] The word then passed to the counting frame with beads or balls sliding on wires, attested in English from the 17th century,[4][5] and this is the main sense today.[2][6] In architecture the word names the flat slab on top of a column's capital (1563).[5][2]

Timeline

  • 1387 – a sand-strewn board for drawing figures and calculating.[5][3]
  • 1563 – the slab crowning the capital of a column.[5][1]
  • 1686 – a calculating frame in which balls slide on wires.[5][1]
  • 1853 – in classical antiquities, a sideboard.[5]

Modern meaning

Noun

  1. A frame with rows of sliding beads or counters, used for doing arithmetic by hand.
  2. (architecture) The flat slab forming the top of a column's capital.
  • abacist

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
  3. ^ a b c d Barnhart, Robert K., ed. (1995), The Barnhart Concise Dictionary of Etymology, New York: HarperCollins
  4. ^ a b c d e f g Harper, Douglas, Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b c d e f g Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  6. ^ Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster

Related etymologies

Cite this entry

“Abacus.” Etymologically, 9 Oct. 2026, etymologically.com/en/abacus. Accessed 9 Oct. 2026.

Last edited on .