Nonius Definition
noun
A device for adjusting the accuracy of mathematical instruments, later superseded by the vernier.
Wiktionary
Other Word Forms of Nonius
Noun
Singular:
nonius
Plural:
noniusesOrigin of Nonius
Latinised form of the name of Pedro Nuñes (1502-78), a Portuguese mathematician and geographer.
From Wiktionary
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