arithmetician

noun

1. (archaic)One with expertise in arithmetic; a mathematician.

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

   “I haue read the truest computer of Times, and the best Arithmetician that euer breathed, and he reduceth thy dayes into a short number: The daies of Man are threescore and ten.”

   “But I'll tell you one thing; it's a Question that would puzzle an Arithmetician, if you ſhould ask him, whether the Bible ſaves more Souls in Weſtminſter-Abby, or damns more in Weſtminſter-Hall: […]”

   “Bonoro. What said he? / Tycho. That he would say but three words and follow me. I heard him say a hundred, and sing a thousand: Lovers are bad arithmeticians.”

   “You talk of figures, now; you have only to say to Stelling, ‘I want my son to be a thorough arithmetician,’ and you may leave the rest to him.”