Astrological/ˌæstrəˈlɑːdʒɪkl/ Definition 1 of 2Pro Tip 1/3Personality Insights Often used to suggest character traits based on someone's birth details or horoscope. People say my astrological sign makes me ambitious and driven. Pro Tip 2/3Decision Making Astrological advice might be sought for making personal or life choices. She consulted her astrological chart before deciding on the career path. Pro Tip 3/3Predictive Power Astrological information is sometimes believed to predict future events. His astrological predictions suggest a fruitful period ahead.