[f. THERMO- + -GRAM: cf. next.] = next, 2.
1883. R. H. Scott, Elem. Meteorol., 38. The thermograms, as such curves are called, are measured every hour.
1901. Nature, 28 March, 522/2. During each winter the Vienna thermograms show some anomalous jumps of temperature, amounting to 3° to 5° C.