What does "arithmetician" mean?

One with expertise in arithmetic; a mathematician.

How do you pronounce "arithmetician"?

Pronounced //əˌɹɪθməˈtɪʃ(ə)n//.

Common synonyms include: calculators, hand calculator, math expert, mathematician, mental calculator, number cruncher.

/əˌɹɪθməˈtɪʃ(ə)n/ noun

noun ·Rare ·Advanced level

Noun

1
One with expertise in arithmetic; a mathematician. archaic
"[F]or certes, ſayes he, / I haue already choſen my officer, and what was he? / Forſooth, a great Arithmeticion, [...]"
2
someone who specializes in arithmetic wordnet

"[F]or certes, ſayes he, / I haue already choſen my officer, and what was he? / Forſooth, a great Arithmeticion, [...]"

From Middle French arithmeticien; equivalent to arithmetic + -ian.