GEO- Meaning of GEO- in English ge ‧ o- /dʒiːəʊ, dʒɪə $ dʒiːoʊ, dʒɪə/ AmE prefix technical [ Language: Greek ; Origin: ge 'earth' ] relating to the Earth or its surface:geophysicsgeopolitical Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012