Adjective
Of or pertaining to Mount Sinai; given or made at Mount Sinai; as, the Sinaitic law.
Source: Webster's dictionaryBut any story will be believed against the Sinaitic monks, even that they made fires with parchment." Source: Internet
The Talmud gives no information concerning the origin of the middot, although the Geonim ("Sages") regarded them as Sinaitic (given by God to the people of Israel at the time of the Sinai presence). Source: Internet