Is THEMA a Wordle Word?

Yes. THEMA is a valid Wordle word.

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

What does THEMA mean?

A subject or theme.“Eco has his own image for this method-spiral repetition: every new exploration elevates the solutions to a higher level by expanding the thema's cognitive context.”

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

Starter word rating: AverageIn the top 15% of all valid Wordle words for testing common letters.
Vowels: E, A
Unique letters: 5 of 5
Common letters: T, E, A

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.