Chaldeans

greek: Χαλδαῖος (Chaldaios) · latin: Chaldaeus · babylonian: Kaldu / Kaldāyu

Definition

In its original sense, an inhabitant of Chaldea — the south-Mesopotamian region around the city of Ur, the homeland of the Aramean-speaking Chaldean tribes who came to rule Babylon in the first millennium BCE. In Greek and Roman literature 'Chaldean' (Greek Χαλδαῖος, Latin Chaldaeus) became a generic professional label for astrologers, reflecting the perceived Babylonian origins of astrological doctrine and the transmission of Babylonian celestial science into the Greek-speaking world through scholars such as Berosus.

In Tradition

Across Hellenistic and Western tradition, 'Chaldean' was used loosely as a synonym for 'astrologer' rather than as a strict ethnic designation, marking the broadly acknowledged Babylonian origins of horoscopic astrology. In Babylonian sources themselves the term carries a narrower political-tribal meaning, denoting the Chaldean-Aramean nobles at the southern fringe of the Neo-Assyrian and Neo-Babylonian empires.

In Practice

The label rarely figures in chart reading — its weight is historiographical rather than technical. Practitioners encounter 'Chaldean' chiefly in source notes, when classical authors (Cicero, Pliny, Plutarch, Strabo) cite 'the Chaldeans' as authorities or critics of a particular doctrine. In Western tradition the Chaldean order of the planets (Saturn–Jupiter–Mars–Sun–Venus–Mercury–Moon, from outermost to innermost) underlies planetary-hour reckoning, day-rulerships, and the traditional sequence of triplicities, terms, and decans.

Historical Origin

Holden traces the professional sense of 'Chaldean' to Berosus and Babylonian teachers who first brought their art into Greek-speaking circles; Plutarch records the label still in use in the late Roman Republic. Strabo (Geography XVI 1.6) speaks of 'astronomical Chaldeans' as a distinct scholarly community most strongly associated with Uruk, an external classical-source recognition of the Babylonian astronomical tradition. In Babylonian-period sources (Hunger's SAA 8 Astrological Reports), the cognate šarrabu / LÚ.ka-al-du denotes the political-tribal Chaldean nobility rather than a profession.

Etymology

Origin: Greek / Latin / Akkadian. Meaning: Inhabitant of Chaldea; later, an astrologer.

Further Reading

  • Francesca Rochberg, The Heavenly Writing
  • Hermann Hunger, Astrological Reports to Assyrian Kings
  • James H. Holden, A History of Horoscopic Astrology