Definition of ultramarine:

part of speech: noun

The most beautiful and durable sky- blue color, so called either from its intense blue, or from the lapis lazuli, from which it is made, being brought from Asia, beyond the sea.

part of speech: adjective

Situated beyond the sea.

part of speech: noun

A beautiful blue coloring matter made from lapis lazuli.

Usage examples for ultramarine:

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The right- hand side of a vessel looking towards the bow, or front; opposite to port. ...