A device for adjusting the accuracy of mathematical instruments, later superseded by the vernier.
Origin of nonius
Latinised form of the name of Pedro Nuñes (1502-78), a Portuguese mathematician and geographer.
Nonius Sentence Examples
He also could boast of having recovered Ammianus Marcellinus, Nonius Marcellus, Probus, Flavius Caper and Eutyches.
The work was very much used (mention is made of an abridged edition) by Pliny the elder, Asconius Pedianus (the commentator on Cicero), Nonius, and the philologists.
The tradition was continued in the 4th century by Nonius Marcellus and C. Marius Victorinus, both Africans; Aelius Donatus, the grammarian and commentator on Terence and Virgil, Flavius Sosipater Charisius and Diomedes, and Servius, the author of a valuable commentary on Virgil.