fnu

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Phrase

1. {{lb|en|travel|aviation|genealogy}} {{init of|en|[[first name]] [[unknown]]}} {{qual|used on birth certificates or airline reservations}}
2. {{init of|en||Formazin Nephelometric Unit}}, a [[turbidity]] measurement also known as Formazin Turbidity Unit (FTU).

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.