1(chiefly in names or geographical terms) relating to Scotland or the Scottish Highlands:the Caledonian Railway
2 Geology relating to or denoting a mountain-forming period (orogeny) in NW Europe and Greenland during the Lower Palaeozoic era, especially the late Silurian.
noun
1chiefly humorous or literary a person from Scotland.
2 (the Caledonian) Geology the Caledonian orogeny.
Origin:
from Caledonia, the Latin name for northern Britain, + -an
Caledonian in other Oxford dictionaries
Definition of Caledonian in the US English dictionary
