A recorded chart or graph showing simultaneous measurements of atmospheric pressure and temperature over time.
From Greek 'baros' (pressure) + 'thermo' (heat/temperature) + '-gram' (something written/recorded). This technical term emerged in 19th-century meteorology as instruments became capable of continuous dual measurements.
Barothermograms were crucial tools for early weather forecasters—by seeing pressure and temperature together on one chart, they could spot patterns that predicted storms or weather changes more reliably than either measurement alone.
Complete word intelligence in one call. Free tier — 50 lookups/day.