Is MIREX a Wordle Word?

Yes. MIREX is a valid Wordle word.

It is not on the Wordle answer list, so it is unlikely to be a daily answer.

What does MIREX mean?

The pesticide and fire retardant perchloropentacyclodecane, which is a persistent organic pollutant.

Definition from Wiktionary, available under the CC BY-SA license.

Starter word rating: WeakIn the top 41% of all valid Wordle words for testing common letters.
Vowels: I, E
Unique letters: 5 of 5
Common letters: I, R, E
Rare letters: X

Letter ratings use how often each letter appears in Wordle answers.

Tap its tiles to the colours Wordle showed, and the Wordle Solver lists every word that still fits, with the best next guess.