D defs.my
Entry 2 senses Webster, 1913

Quadrat

· Quad·rat · IPA /ˈkwɒd.ɹæt/
01 n. A block of type metal lower than the letters, -- used in spacing and in blank lines.
  1. 1.
    A block of type metal lower than the letters, -- used in spacing and in blank lines.(Print.)
  2. 2.
    An old instrument used for taking altitudes; -- called also geometrical square, and line of shadows. Also: geometrical square, line of shadows