Synonyms of the word

reckoner

• n. One who reckons.
• n. (archaic) An accountant.

calculator

• n. A mechanical or electronic device that performs mathematical calculations.
• n. (dated) A person who performs mathematical calculation.
• n. A person who calculates (in the sense of scheming).
• n. (obsolete) A set of mathematical tables.

computer

• n. (now rare, chiefly historical) A person employed to perform computations; one who computes.
• n. by restriction, a male computer, where the female computer is called a computress.
• n. A programmable electronic device that performs mathematical calculations and logical operations, especially…

enchiridion

• n. A handbook or manual.
• n. A dagger.

estimator

• n. A person who estimates, especially one who estimates costs.
• n. (mathematics) A function of a random sample of a population used to estimate some parameter of the whole…

expert

• adj. Extraordinarily capable or knowledgeable.
• adj. Characteristic of an expert.
• n. A person with extensive knowledge or ability in a given subject.
• n. (chess) A player ranking just below master.

handbook

• n. A topically organized book of reference on a certain field of knowledge, regardless of size.