decan

[ dek-uh n ]
/ ˈdɛk ən /
|

noun Astrology.

any of three divisions of 10° within a sign of the zodiac.

Origin of decan

1400–50; late Middle English < Late Latin decānus chief of ten; see dean1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for decan