\begin{definition}[Definition:Algorism/Algorist]
During the middle ages, an '''algorist''' was an arithmetician who used algorism, as opposed to an  abacist who calculated using an abacus.
By the time of {{AuthorRef|Leonhard Paul Euler}}, the term had evolved to mean a mathematician who devised algorithms for more complicated operations than those of the classical algorithms.
\end{definition}