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ab·a·cus
 abacus
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- pronunciation:
- ae
b
ks
- features:
- Word Combinations (noun), Word Explorer
| part of speech: |
noun |
| inflections: |
abaci, abacuses |
| definition: |
a device used to make arithmetic calculations, consisting of a frame with parallel rods or grooves that hold movable counters such as beads.
The shopkeeper used an abacus to add up our purchases. |
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