How many letters does the top answer for “of or pertaining to the plectognathi.” have?

The most common answer is plectognathic (13 letters).

Crossword clue: of or pertaining to the plectognathi.

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

plectognathic 13 letters web-def

Of or pertaining to the Plectognathi.

plectognathous 14 letters web-def

Of or pertaining to the Plectognathi.