Nonius

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

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Nonius m (strong, genitive Nonius, plural Noniusse or Nonien)

1. (historical) nonius
2. vernier caliper

Unlike its English counterpart nonius, the term Nonius also encompasses the more sophisticated vernier caliper, which works on a similar principle.

• → Japanese: ノギス (nogisu)
  • → Korean: 노기스 (nogiseu)

• “Nonius” in Duden online

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

• (Classical Latin) IPA^(key): [ˈnoː.ni.ʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈnɔː.ni.us]

Nōnius m sg (genitive Nōniī or Nōnī); second declension

1. a Roman nomen gentile, gens or "family name" famously held by:
   1. Nonius Marcellus, a Roman grammarian

Second-declension noun, singular only.

¹Found in older Latin (until the Augustan Age).

• Nōnia

• “Nonius”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• Nonius in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.