An instrument that automatically records or registers changes in atmospheric conditions, moisture, or vapor content.
From Greek atmis (vapor) + -graph (recording/writing device), meaning 'vapor recorder.' Similar to barograph or thermograph, it's a self-recording instrument.
The atmograph was the Victorian-era version of modern weather sensors—it had a pen that would trace changes in moisture directly onto a rolling drum, creating a continuous paper record of atmospheric activity.
Complete word intelligence in one call. Free tier — 50 lookups/day.