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Meaning of lumen second | Babel Free

Noun CEFR B2

Definitions

A derived SI unit of luminous energy.

Equivalents

Русский лю́мен-секу́нда

CEFR level

B2

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

See also

lumen-hour lumenization lumenogenesis Lumholtz's tree kangaroo lumia lumiaggregometer