Definition

A person or tool that calculates or figures out numbers, often used for mathematical tasks.

Example

The reckoner helped the students solve complex math problems quickly.

Conversation

Have you ever used a reckoner for your math homework?

No, I haven't. What is it exactly?

It's a handbook with tables that helps with calculations.

That sounds helpful! I could definitely use something like that.

Synonyms & Antonyms

Root Explanation

Reckoner → It is formed from "reckon" (from Old English "recenian", meaning to count or calculate) and "-er" (meaning a person who). A reckoner is a person who counts or calculates.

Memory Tip

Think of someone who 'counts' or 'calculates' — that's what a reckoner does.

Visually Confused Words