unknown region
- noun
Examples
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Miss Resnick, medical science still has many unknown regions to explore.
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To send the halfling along with Drizzt into this unknown region!
Fiction book (1992) -
Scientists are eager to explore the unknown region of the ocean where no human has ever ventured.
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Many explorers have set out to chart unknown regions in search of new species and resources.
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This part of the forest remains an unknown region, filled with potential discoveries and dangers.
Synonyms
Something you do not know or cannot identify, for example a variable in math
A new, not familiar situation that may have unknown risks
An area or subject that is unfamiliar and not tried before
Something unknown and not yet explored, like a place or idea
A place or subject that people do not know yet
How Explored
Surface Forms
Morphology
The adjective 'unknown' directly modifies the noun 'region' to yield 'a region that is not known or is unfamiliar,' so the overall meaning is compositionally derived from the constituents. This simple adjectival-noun pattern is common cross-linguistically and follows standard semantic combination, making it immediately comprehensible to a B1 learner who knows both words.
Etymology
Unknown region may come from old maps and explorer stories. Mapmakers and travellers would mark places as unknown or call them a region they had not seen, so the phrase now means 'an area not discovered or explored'.