Geothermic, je-o-ther'-mik, a

Nuttall's Standard Dictionary of the English Language · 1890 · p. 88

belonging to the central heat of the earth (Gr. ge and thermos,heat).

Bu kavram başka kaynaklarda da geçiyor

-ther — Chamber's Twientieth Century Dictionary (1908)
æther — The Century Dictionary and Cyclopedia (1897)
Æ′′THER — Cooley's Cyclopedia of Practical Receipts and Collateral Information (1880)
THER — Dictionary of Science, Literature and Art (1842)

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