Clavius

== Translingual == === Etymology === After Christopher Clavius, Latinization of a German name, such as Klau, or from Latin clavis (literally “key”), a calque of a name such as Schlüssel or Nagel. === Proper noun === Clavius (planetology) Clavius Crater === References === James M. Lattis (2010), Between Copernicus and Galileo: Christoph Clavius and the Collapse of Ptolemaic Cosmology, University of Chicago Press, page 13 == English == === Etymology === After Christopher Clavius, Latinization of a German name, from Latin clavis (literally “key”). === Proper noun === Clavius Ellipsis of Clavius Crater. === Further reading === Clavius (crater) on Wikipedia.Wikipedia