דַּוְקָנָא, (דּוּק) calculating, accurate scholar. Ab. Zar. 10ᵃ ספרא ד׳ an accurate scribe (paying attention to exact historical dates).—Pl. דַּוְקָנֵי, דַּוְו׳. Men. 29ᵇ ספרי ד׳ careful copyists of the Bible. Yeb. 43ᵃ משום דמסיימי בה ד׳ זו וכ׳ because exact scholars report a traditional addition (to the Halachah in question), ‘These are the words of R. S.’