The meaning of CIRCUMVOLUTE is to wind or turn in volutions especially in an inward spiral (as of a snail shell or the capital scroll of an Ionic column).
"bordering on every side," late 15c., from Latin circumiacens, present participle of… See origin and meaning of circumjacent.
or directly from Latin navigationem (nominative navigatio) "a sailing, navigation, voyage," noun of action from past-participle stem of navigare "to sail, sail over, go by sea, steer a ship," from navis "ship" (from PIE root *nau- "boat") + root of agere "to set in motion, ...