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Meaning of FNU | Babel Free

Phrase CEFR C2

Definitions

  1. Initialism of first name unknown (used on birth certificates or airline reservations)
  2. Initialism of Formazin Nephelometric Unit, a turbidity measurement also known as Formazin Turbidity Unit (FTU).

CEFR level

C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
See all C2 English words →

See also

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