uncharted territory (English, noun)
expansion: uncharted territory (countable and uncountable, plural uncharted territories)
Senses:
glosses: An area of land that has not been surveyed.
tags: countable
uncountable
glosses: Synonym of uncharted water (an unknown situation).
tags: countable
figuratively
uncountable
Forms:
form: uncharted territories
tags: plural