IAU.
Initialism of International Astronomical Union, an association of professional astronomers, founded in 1919.
Meaning & usage
Initialism of International Astronomical Union, an association of professional astronomers, founded in 1919.
The main belt asteroid 5000 IAU, named after the astronomical union.
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Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.