How many letters does the top answer for “of or relating to or used in or practicing neurology” have?

The most common answer is neurologic (10 letters).

Crossword clue: of or relating to or used in or practicing neurology

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

neurologic 10 letters wn-def

of or relating to or used in or practicing neurology

neurological 12 letters wn-def

of or relating to or used in or practicing neurology