[jee-oh-kuh-roh-nuh] /ˌdʒi oʊ kəˈroʊ nə/
a belt of ionized hydrogen surrounding the earth at the outer limit of the exosphere.
The halo of far-ultraviolet solar light that reflects off the Earth’s exosphere.
1. . 2. . abbreviation 1. geodesy 2. geodetic
Geophysical Data System
[jee-ohd] /ˈdʒi oʊd/ noun 1. a hollow concretionary or nodular stone often lined with crystals. 2. the hollow or cavity of this. 3. any similar formation. /ˈdʒiːəʊd/ noun 1. a cavity, usually lined with crystals, within a rock mass or nodule n. rounded stone with a hollow center lined with crystals, 1670s, from French géode, […]
/ˌdʒiːəʊdɛməˈɡræfɪks/ plural noun 1. (functioning as sing) the study and grouping of the people in a geographical area according to socioeconomic criteria, esp for market research