Definition

In a way that can be counted or matched with natural numbers.

Example

The set of all integers is countably infinite, meaning it can be listed in a sequence.

Conversation

Did you know that some sets can be countably infinite?

Really? I always thought infinite was just infinite!

Yeah, it means they can be matched with the natural numbers.

That makes sense! It’s fascinating how math works like that.

Synonyms & Antonyms

Root Explanation

Countably → It is formed from "count" (from Latin "computare", meaning to calculate or reckon) and the suffix "-able" (meaning capable of). The word "countably" 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 'countably' means something that can be counted.

Visually Confused Words