Meaning of clock hour | Babel Free
Definitions
A full sixty-minute period (as opposed to a scheduled length of time that is called an "hour" but not equivalent to sixty minutes, such as a student hour).
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.