How many letters does the top answer for “combine so as to form a more complex, product” have?

The most common answer is synthesise (10 letters).

Crossword clue: combine so as to form a more complex, product

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

synthesise 10 letters wn-def

combine so as to form a more complex, product

synthesize 10 letters wn-def

combine so as to form a more complex, product