# abaculus

CEFR C2 · Noun

Source: https://englishreference.com/word/abaculus
Updated: 2026-05-18

## Definition

a small stone or piece of wood used by ancient people to help with counting. It is a very old tool for doing math.

For teachers: a small stone or piece of wood used as a counting tool in ancient times. Often used in the context of early mathematical or accounting practices.

## Examples

- The abaculus was used to keep track of numbers.
- While the abaculus served as a simple counting aid, its design allowed for complex calculations that were essential for managing trade and taxation in the ancient world.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.