Definition

A line that shows where the wind speed is the same on a graph or chart, often used in weather maps.

Example

The meteorologist pointed out the isotach on the weather map to explain the wind patterns.

Conversation

Have you ever looked at a weather map with an isotach on it?

No, I haven't! What does that mean?

An isotach shows lines of equal wind speed, which is pretty neat.

That sounds interesting! I should pay more attention to those maps.

Synonyms & Antonyms

Root Explanation

Isotach is formed from "iso-" (meaning equal) and "tachos" (from Greek, meaning speed or rate). The word refers to lines or points that have equal speed or rate, often used in scientific contexts to describe phenomena that occur at the same velocity.

Memory Tip

Think of 'equal' ('iso-') speeds or rates ('tachos') when you remember that isotach refers to points or lines that share the same speed.

Visually Confused Words