dekan

noun

dek·​an

ˈdekən

plural -s

: one of 36 equal subdivisions of the equatorial belt of the celestial sphere including the ecliptic and the stars contained in it

—used in ancient Egyptian astronomy

dekanal

ˈdekənᵊl

adjective

Word History

Etymology

Greek dekanos, from deka ten; from the ten days of each subdivision

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