Correct spelling for the English word "scinto" is [sˈɪntə͡ʊ], [sˈɪntəʊ], [s_ˈɪ_n_t_əʊ] (IPA phonetic alphabet).
There is no recognized word "scinto" in the English language. It is possible that you may be referring to a word from another language or a term specific to a certain field or jargon. To provide a detailed etymology, please specify the language or context in which "scinto" is used.