the 21st century
Proposed by a contributor, not yet supported by evidence.
Meaning · English
Common English phrase; full definition pending editorial review.
Register: neutral
Sources & notes
Everyday learner phrase (CEFR A1); level cross-referenced from published learner lists. Definition pending editorial review.
Common questions
What does “the 21st century” mean?
Common English phrase; full definition pending editorial review.
Is “the 21st century” formal or informal?
the 21st century is generally neutral.