It’s about time. We are now on Instagram!
"fear of open spaces," 1873, from German Agorophobie, coined 1871 by Berlin psychiatrist Carl Westphal (1833-1890) from Greek agora "open space" (see agora) + -phobia "fear." Related: Agoraphobe; agoraphobic.
agoraphobia ag·o·ra·pho·bi·a (āg'ər-ə-fō'bē-ə)n. Phobia of open or public places.