add-ing in course
Phonetic: /ˈæd.ɪŋ ɪn kɔːrs/
In Medieval astrology, adding in course refers to the adjustment of planetary calculations by adding values according to a planet’s motion through the zodiac.
This procedure was part of the mathematical methods used in Medieval astronomical and astrological computation. Astrologers added numerical values to account for changes in planetary movement, longitude, or progression through signs and degrees. The method helped determine accurate positions for chart construction and predictive techniques. Medieval astrology relied heavily on such computational procedures inherited from Hellenistic and Arabic astronomical traditions.