What does the cryptic crossword clue "Ain’t Mass traduced in this? (8)" mean?

The wordplay uses an anagram. anagram of AINT (synonym="AINT") + MASS (synonym="MASS") = SATANISM The answer is SATANISM.

Ain’t Mass traduced in this? (8)

Guardian Cryptic #29600 | 25 Across | 2025-01-24 flower