Definition

Referring to items that can be counted individually, often used in mathematics to describe sets that can be matched with whole numbers.

Example

In mathematics, the set of natural numbers is countable because you can list them one by one.

Conversation

I was studying math and came across the term countable sets.

Oh, I remember that! It means you can list them out, right?

Exactly! Like all the whole numbers are countable.

Yeah, and it’s so cool how some infinities are actually larger than others!

Synonyms & Antonyms

Root Explanation

Countable → It is formed from "count" (from Latin "computare", meaning to calculate or reckon) and "-able" (meaning capable of). The word "countable" refers to something that is capable of being counted or enumerated.

Memory Tip

Think of the word 'count' which means to calculate, and remember that 'countable' describes things that can be calculated or counted.

Visually Confused Words