What does the word ultramarine mean?

Usage examples for ultramarine

  1. Numerous smaller islets, gems set in the ultramarine blue of the sea, were also passed within the next hour. – Around the World in Ten Days by Chelsea Curtis Fraser
  2. On the left was an ultramarine sea, with white- sailed boats, and to the right lay cliffs and olive groves. – The Jolliest School of All by Angela Brazil
  3. By degrees, however, the wonderful ultramarine used in the decoration of the groined roof asserts itself, and what at first seemed utter blackness unfolds imperceptibly into an extraordinary scheme of colour. – Cathedral Cities of Italy by William Wiehe Collins
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