Definition
abaci
noun
- plural of abacus; counting frames with beads or balls used for arithmetic calculations
Usage: standard plural form
Examples
- The teacher showed the students how to use abaci to add and subtract numbers.
- Ancient merchants relied on abaci for quick calculations in the marketplace.
- Several wooden abaci were displayed in the museum's mathematics exhibit.
- Children in some schools still learn basic arithmetic using abaci.
- The shop sold both modern calculators and traditional abaci.