Etymology

nonius

N1O1N1I1U1S1

Today it means: A device for adjusting the accuracy of mathematical instruments, later superseded by the vernier. Full definition →

Latin Nonius
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The story

  1. Latin · borrowed fromNonius
  2. English todaynonius

Borrowed from Latin Nonius, the Latinised form of the name of its inventor, Pedro Nunes (1502-78), a Portuguese mathematician and geographer.

Etymology from Wiktionary, CC BY-SA 4.0.