Sinaic \Si*na"ic\, Sinaitic \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.

Source: Webster's Revised Unabridged Dictionary (1913)