atmo-

American  

1. a combining form meaning “air,” used in the formation of compound words.

   atmosphere.

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atmo- British  

combining form

1. air or vapour

   atmometer

   atmosphere

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Usage

What does atmo- mean? Atmo- is a combining form used like a prefix meaning “air.” It is often used in scientific terms, especially in meteorology. Atmo- comes from the Greek atmós, meaning “smoke” or "vapor."

Etymology

Origin of atmo-

< Greek, combining form of atmós vapor, smoke

Example Sentences

Rainmaker also uses data from satellites and National Weather Service radar, and it is working to automate its weather modeling with Atmo, an AI-weather forecasting company.

From The Wall Street Journal • Dec. 4, 2025