[1940–45; geo- + scientist]This word is first recorded in the period 1940–45. Other words that entered Englishat around the same time include: blockbuster, redline, set-aside, snorkel, whiteoutgeo- is a combining form meaning “the earth,” used in the formation of compound words.Other words that use the affix geo- include: geodesy, geology, geopotential, georama, geostrophic