Enter a clue or pattern or both:
The Clue
Making iridescent (9 letter answer)
The Answer
OPALIZING
Tags
Notes
The answer OPALIZING is so rare that it appears less than once every 2500 puzzles.
Definition
OPALIZE as a verb:
1. (opalize, opalise) = make opalescent
2. (opalize, opalise) = replace or convert into opal; "opalized tree trunks"