Geographic means to do with the earth's regions and features. Geographic distribution, a geographic region, geographic spread.
Geographic and geographical mean exactly the same, and which one is used varies by writer and by phrase rather than by rule. The National Geographic fixed the shorter form in a great many minds.
1adjectivegeographicTo do with the earth's regions and features, in the shorter adjective form that ends in -ic.
“The map shows the country's main geographic features, like rivers and mountains.”
geographic is a quality.
Latin geographicus comes from Greek ge, earth, plus graphein, to write.
Latin
geōgraphicus
English, today
geographic
From Latin geōgraphicus; see French géographique. by surface analysis, geography + -ic.
Etymology from Wiktionary, CC BY-SA