One of the mysteries of the English language finally explained.
1Earthly, terrestrial (often in contrast to heavenly).
2Astronomy and Geography. Of a point on the earth: having the sun in the zenith (directly overhead); relating to this point. Also in extended use. Especially in "subsolar point".
Mid 17th century. From sub- + solar, originally after post-classical Latin subsolaris earthly, exposed to the sun. Compare subsolary.
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