leap second
Definitions
A second of time added to the year occasionally to compensate for variation in the rate of Earth's rotation relative to the absolute standards of time.
Equivalents
4 more languages
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.
Know this word better than we do? Language is a living thing — help us keep it growing. Collaborate with Babel Free