rekenkundige
Rekenkundige is a Dutch term that can refer to a person who specializes in calculation, i.e., an arithmetician, or, as an adjective, to anything pertaining to arithmetic or numerical computation.
The word derives from reken, to calculate, and kunde, knowledge; together they form rekenkunde, the science of
Historically, rekenkundigen worked as professional calculators for merchants, navigators, tax authorities, or astronomers, performing complex computations
In modern Dutch, the noun is largely archaic or specialized; more common terms include rekenaar for a