cir ‧ cum ‧ nav ‧ i ‧ gate /ˌsɜːkəmˈnævəɡeɪt, ˌsɜːkəmˈnævɪɡeɪt $ ˌsɜːr-/ BrE AmE verb [transitive]
to sail, fly, or travel completely around the Earth, an island etc
—circumnavigation /ˌsɜːkəmnævəˈɡeɪʃ ə n, ˌsɜːkəmnævɪˈɡeɪʃ ə n $ ˌsɜːr-/ noun [uncountable and countable] :
circumnavigation of the world