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Meaning of regular open | Babel Free

Adjective CEFR B2

Definitions

Being the interior of its closure.

not-comparable, rare

Examples

“The set (0,1)∪(1,2) is open, but is not regular open, because its closure is [0,2], so the interior of its closure is (0,2).”

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

regular-duty regularizable regulatable regulated regulation regulational