I'm looking for a word which can be used to describe a location upon the earth which does not belong to a country. For example 'North America' though the word 'continent' can be used here. Another example would be the 'Mid-Atlantic Ridge'.
Words like 'location' or 'toponym' are not specific enough and could equally be used to describe somewhere within a country.
Within a sentence I would use it something like:
"The Mid-Atlantic ridge doesn't belong to a country, so it is (countryless)"
Any suggestions?
Best Answer
You could use the following term for territories that don't belong to anybody
It applies to your example of the mid-ridge Atlantic or other geographical features.
"The Mid-Atlantic ridge doesn't belong to a country, so it is terra nullius"
if it's a piece of land above sea you can also simply say
You'd get thousand of hits on Google for it and it's the most commonly used term.
But for things owned by several countries, like North-America, then
is the right word to use, in its strictest sense.
For example "The Himalayas are an international mountain range"
See also The Helsinki Rules on the Uses of the Waters of International Rivers set up mainly to deal with the Nile situation.