nonius

== English == === Etymology === Borrowed from Latin Nonius, the Latinised form of the name of its inventor, Pedro Nunes (1502-78), a Portuguese mathematician and geographer. === Pronunciation === IPA(key): /ˈnəʊnɪəs/ Rhymes: -əʊniəs === Noun === nonius (plural noniuses) A device for adjusting the accuracy of mathematical instruments, later superseded by the vernier. ==== Derived terms ==== nonius horopter ==== Translations ==== === Anagrams === UNISON, Unions, unions, unison