Definition

Referring to a mathematical operation or quantity that, when applied multiple times, does not change the result after the first application.

Example

In mathematics, the function is idempotent because applying it more than once does not alter the outcome.

Conversation

I was reading about something called idempotent operations in math yesterday.

Oh really? What does that mean exactly?

It means that if you apply the operation multiple times, it doesn’t change the result after the first time.

That’s interesting! I guess that makes some calculations a lot simpler.

Synonyms & Antonyms

Root Explanation

Idempotent → It is formed from "idem" (meaning the same) and "potent" (from Latin "potens", meaning powerful or having power). The term describes a mathematical operation that, when applied multiple times, yields the same result as if it were applied once, hence the idea of being 'the same' in effect.

Memory Tip

Think of 'the same' ('idem') being 'powerful' ('potent') in its effect — that's why idempotent means an operation that remains unchanged no matter how many times it is applied.

Visually Confused Words