How many letters does the top answer for “superior development of one side of the body” have?

The most common answer is dominance (9 letters).

Crossword clue: superior development of one side of the body

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

dominance 9 letters wn-def

superior development of one side of the body

laterality 10 letters wn-def

superior development of one side of the body

paralysis of one side of the body 50% similar → hemiplegia