arithmeticmachine
nounUK /əˈrɪθmətɪk məˈʃiːn/
US /əˈrɪθmətɪk məˈʃiːn/
A machine that does math for you.
Long ago, people used an arithmetic machine to add up big numbers.
OTHER MEANINGS
2. An early mechanical device for adding and subtracting numbers.
The old arithmetic machine in the museum still turns its gears.
3. Any tool or device that helps with counting and calculation.
A simple arithmetic machine can help young students check their sums.
4. A historical term for a mechanical calculator used in offices.
Clerks relied on an arithmetic machine before electronic calculators existed.