Azimuth is the angle between a reference direction, usually north, and a line to an object in the sky or on the ground, measured around the horizon. It helps describe exact directions.
From Medieval Latin “azimut,” from Arabic “as-sumūt,” the plural of “as-samt,” meaning “the direction” or “the way.” Astronomers in the Middle Ages brought the term into European science.
The word is a quiet fossil of Arabic science sitting inside modern navigation and astronomy. Every time someone tracks a satellite’s azimuth, they’re using a direction word that once guided desert travelers.
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