Webster's Revised Unabridged Dictionary · 1913

Transatlantic

Transatlantic (trans*at*lan"tik) , adjective

[Prefix trans- + Atlantic: compare French transatlantique.]

1.
Lying or being beyond the Atlantic Ocean.

When used by a person in Europe or Africa, transatlantic signifies being in America; when by a person in America, it denotes being or lying in Europe or Africa, especially the former.

2.
Crossing the Atlantic Ocean; as, a transatlantic flight.