Definify.com
Webster 1913 Edition
Atlantic
1. 
Of or pertaining to Mt. Atlas in Libya, and hence applied to the ocean which lies between Europe and Africa on the east and America on the west; 
as, the 
 Atlantic 
Ocean (called also the Atlantic
); the Atlantic 
basin; the Atlantic 
telegraph.2. 
Of or pertaining to the isle of Atlantis. 
3. 
Descended from Atlas. 
The seven 
Atlantic 
sisters. Milton.