You searched for: “earth thermometer”
soil thermometer, earth thermometer (s) (noun); soil thermometers; earth thermometers (pl)
An apparatus suited to take the temperatures of the soil: A soil thermometer is an instrument, commonly a mercury-in-glass thermometer, that is used to measure the temperature of soils at a great depth.
This entry is located in the following units: soil- + (page 2) thermo-, therm-, thermi-, -thermia, -therm, -thermal, -thermic, -thermias, -thermies, -thermous, -thermy (page 17)