We don't have synonyms for deca- yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are decay, decal and decad.
(N) :
Deca- (and dec-), sometimes deka-, is a common English-language numeral prefix derived from the Late Latin ("(set of) ten"), from Ancient Greek , from (déka, "ten").
(N) :
Deca- (and dec-), sometimes deka-, is a common English-language numeral prefix derived from the Late Latin ("(set of) ten"), from Ancient Greek , from (déka, "ten").