Definition

A line on a map that connects places with the same temperature at a specific time or over a certain period.

Example

The meteorologist used an isotherm to show the temperature distribution across the region.

Conversation

Have you ever seen an isotherm on a weather map?

Yeah, I find those really interesting!

It’s cool how they show areas with the same temperature.

I agree! They make it easier to understand the weather patterns.

Synonyms & Antonyms

Root Explanation

Isotherm → It is formed from "iso-" (meaning equal) and "therm" (from Greek "thermos", meaning heat). The word describes a line on a map connecting points of equal temperature, hence equal heat.

Memory Tip

Think of 'equal' ('iso-') temperatures being connected by a line ('therm') — that's what an isotherm represents.

Visually Confused Words