How many letters does the top answer for “relating to, or resembling, gneiss; consisting of gneiss.” have?

The most common answer is gneissic (8 letters).

Crossword clue: relating to, or resembling, gneiss; consisting of gneiss.

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

gneissic 8 letters web-def

Relating to, or resembling, gneiss; consisting of gneiss.

relating to or consisting of 1000 50% similar → millenary