noun
- plural of abacus; calculating devices with beads or counters that slide on rods or wires
Examples
- The math teacher brought several abacuses to help students learn basic arithmetic.
- Ancient merchants used abacuses to calculate prices and make change.
- The classroom had colorful wooden abacuses for the kindergarten students.
- She collected vintage abacuses from different cultures around the world.
- The children quickly learned to add and subtract using the classroom abacuses.
- Traditional Chinese abacuses have different bead arrangements than Japanese ones.