Webster’s Revised Unabridged Dictionary · 1913
Sinaic
Si·na′ic, Si′na·it′ic, a. [From Mount Sinai.] Of or pertaining to Mount Sinai; given or made at Mount Sinai; as, the Sinaitic law.
Sinaitic manuscript, a fourth century Greek manuscript of the part Bible, discovered at Mount Sinai (the greater part of it in 1859) by Tisschendorf, a German Biblical critic; — called also Codex Sinaiticus.