Question: In Tetrabiblos, what does Hyleg mean?
Sentence (from "Tetrabiblos"): Tetrabiblos (Τετράβιβλος ) 'four books', also known in Greek as Apotelesmatiká (Ἀποτελεσματικά ) "Effects", and in Latin as Quadripartitum "Four Parts", is a text on the philosophy and practice of astrology, written in the 2nd century AD by the Alexandrian scholar Claudius Ptolemy ( AD 90– AD 168).
Relevant evidence: Yes