àbac.
an abacus (calculating frame with beads constrained to rows by grooves or wires)
Meaning & usage
an abacus (calculating frame with beads constrained to rows by grooves or wires)
in the Middle Ages, a mathematics textbook
a mathematical table
score string
an abacus (sand tray used for drawing or calculating)
an abacus (uppermost prismatic member of a column)
a checkerboard or a chessboard
an abacus (compartmented tray or table used to store valuables)
More generally, now used for any table
a sluice, especially one used for mining
an abacus (plates of stone or metal used to cover a surface)
Where this word comes from
Borrowed from Latin abacus, abax; from Ancient Greek ἄβαξ (ábax, “board or slab”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.