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Meaning of API unit | Babel Free

Noun CEFR B2

Definitions

A unit of radioactivity used for measuring natural gamma rays in the ground.

Examples

“The radioactivity of a typical shale is 100 API units.”

CEFR level

B2

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

See also

Apia Apiacá apian apiarian Apiaries apiarist