How many letters does the top answer for “having, or consisting of, three stigmas. gray.” have?

The most common answer is tristigmatic (12 letters).

Crossword clue: having, or consisting of, three stigmas. gray.

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

tristigmatic 12 letters web-def

Having, or consisting of, three stigmas. Gray.

tristigmatose 13 letters web-def

Having, or consisting of, three stigmas. Gray.

having, or consisting of, three members. 50% similar → trimembral