n. [ Gr. ge`a, gh^, the earth + E. thermometer. ] (Physics) A thermometer specially constructed for measuring temperetures at a depth below the surface of the ground. [ 1913 Webster ]
n. [ Gr. ge`a, gh^, the earth + E. thermometer. ] (Physics) A thermometer specially constructed for measuring temperetures at a depth below the surface of the ground. [ 1913 Webster ]