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Related Terms:
aries
astrology
taurus
libra
virgo
zodiac sign
precession
cancer
gemini
aquarius
pisces
scorpio
vernal equinox
sagittarius
stars
leo
sun
capricorn
earth
axis
Noun
Definition: A form of astrology that measures the position of the sun relative to the stars. This compensates for the precession of Earth's axis, which causes the zodiac signs to move around the sky relative to the vernal equinox.