From Glossary of Meteorology


(Symbol Ga.) A metallic element, atomic number 31 and atomic weight 69.72, which is soft enough to cut with a knife.

Its melting point is very low, 29.74°C (85.46°F) and its boiling point is 1700°C (3092°F). Gallium is used as a substitute for mercury in high-temperature thermometers.