How many letters does the top answer for “something that bulges out or is protuberant or projects from its surroundings” have?

The most common answer is gibbosity (9 letters).

Crossword clue: something that bulges out or is protuberant or projects from its surroundings

gibbosity, gibbousness, hump, protuberance.

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

gibbosity 9 letters wn-def

something that bulges out or is protuberant or projects from its surroundings

gibbousness 11 letters wn-def

something that bulges out or is protuberant or projects from its surroundings

hump 4 letters wn-def

something that bulges out or is protuberant or projects from its surroundings

protuberance 12 letters wn-def

something that bulges out or is protuberant or projects from its surroundings