Definition

To become less dense or more thin, often referring to air or other substances.

Example

As the altitude increases, the air begins to rarefy, making it harder to breathe.

Tense Forms

Conversation

Have you noticed how the air seems to rarefy at higher altitudes?

Yeah, it's like you can feel the difference in your breathing.

Exactly! It can be a bit challenging if you're not used to it.

For sure, I always need to take it slow when hiking in the mountains.

Synonyms & Antonyms

Definition

To make something thinner or less dense, often by removing some of its substance or impurities.

Example

The scientist aimed to rarefy the gas in the chamber to study its properties.

Tense Forms

Conversation

Have you heard about how they rarefy the air in those high-altitude training facilities?

Yeah, it helps athletes adapt better to oxygen levels.

I find it fascinating that they can rarefy the air to improve performance.

Root Explanation

Rarefy → It is formed from "rarefacere" (from Latin, meaning to make rare or thin) which combines "rares" (meaning rare) and "facere" (meaning to make). The word "rarefy" means to make something less dense or more rare.

Memory Tip

Think of making something 'rare' or 'thin' — 'rarefy' means to make something less dense.

Visually Confused Words