transatlantic

Concise Oxford English Dictionary © 2008 Oxford University Press:
transatlantic/tranzətˈlantɪk/

▶adjective

• 1 crossing the Atlantic.

• 2 concerning countries on both sides of the Atlantic, typically Britain and the US.

• 3 relating to or situated on the other side of the Atlantic; Brit. American; N. Amer. British or European.