iau

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Proper noun

1. {{lb|en|astronomy}} {{initialism of|en|[[international|International]] [[astronomical|Astronomical]] [[union|Union]]|addl=an association of professional [[astronomers]], founded in 1919}}.
2. {{lb|en|astronomy}} The [[main belt]] [[asteroid]] {{w|5000 IAU}}, named after the astronomical union.

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