reckoner

reckoner
subs.
Ar. and P. λογιστής, ὁ.

reckoner:

1. rătiōcĭnātor, Cic. Att. 1, 12.

2. compŭtātor: most careful r.s, diligentissimi computatores, Sen. Ep. 87, 5.

3. suppŭtātor, Firmic. 5, 8.

reckoner, ready (a book to help in calculation): perh. memorialis libellus, Suet. Jul. 56.