Definition

A tool that measures the pressure of the air, often used to help predict the weather.

Example

The barometer showed a drop in pressure, indicating that a storm was coming.

Conversation

Have you ever used a barometer to check the weather?

No, I haven't, but I've heard they can be really accurate.

Yeah, it's interesting how a barometer can predict changes in the atmosphere.

I should get one; it would be fun to see how it works!

Synonyms & Antonyms

Root Explanation

Barometer → It is formed from "baro-" (from Greek "baros", meaning weight) and "-meter" (from Greek "metron", meaning measure). The word "barometer" refers to an instrument that measures atmospheric pressure, which is related to weight.

Memory Tip

Think of measuring 'weight' ('baro-') of the atmosphere with a device that 'measures' ('-meter'). This helps you remember that a barometer is used to measure atmospheric pressure.

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