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Meaning of lookback time | Babel Free

Noun CEFR B2

Definitions

The amount of time elapsed between the moment that light is detected on Earth and the moment it was originally emitted by the source.

CEFR level

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

See also

lookbehind lookbook lookdown looke Looked Looked for

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