Pinax

PEE-naks

greek: πίναξ (Pinax)

Definition

A pinax (Greek pinax, "board, table, tablet") is the consultation board an ancient astrologer used to lay a chart out for a client. The board was carved with the twelve zodiac signs in a circle — sometimes with the decans or other subdivisions too — and the astrologer set small stones or gem markers around it to show where each planet stood, at times matching marker to planet, gold for the Sun and silver for the Moon. The oldest surviving pinax dates to roughly the 1st century BCE. The same word later became the title of astrological treatises by Thrasyllus and Critodemus.

In Tradition

Think of the pinax as the working tool of chart-casting — the physical surface that turned a list of computed positions into a figure you could see during a consultation. Its existence supports the view that ancient interpretation was mostly spoken aloud: the surviving papyrus horoscopes record positions with almost no written interpretation, so the chart shown on the pinax, not a written delineation, was what the astrologer talked the client through.

In Practice

In ancient practice the astrologer first worked out the planetary positions from the birth or inception time, then set them out physically on the pinax: the board held the twelve signs in a fixed circle, and the astrologer placed a marker stone for each planet in its sign, turning an abstract figure into something tangible you could point at and discuss in front of the client. The reading then went on aloud from the board — the astrologer worked through the houses, the planets in them, and their configurations while the client watched. The papyrus record, which preserves positions but little interpretation, makes the pinax the best explanation for how Hellenistic consultations actually delivered their content. The same word names the teaching treatises of Thrasyllus and Critodemus, whose books taught how to read the placements laid out on a pinax. For you, the pinax explains the performed side of Hellenistic astrology that the technical texts leave unstated — it is the ancient ancestor of the printed or on-screen chart wheel.

Historical Origin

Chris Brennan reconstructs the pinax as a consultation tool from the Hellenistic technical tradition and the papyrus record. Dorian Gieseler Greenbaum documents the word entering Demotic Egyptian as a loan-word (pyngs / pynaks) in the magical papyri, where an instruction tells the practitioner to set a board for horoscopy and place the stars on it. Tamsyn Barton's Ancient Astrology records Pinax as the title of Thrasyllus of Mendes' 1st-century-CE treatise, surviving only in an epitome.

Etymology

Origin: Greek. Meaning: Board, table, tablet.

Definition

In Tradition

In Practice

Historical Origin

Etymology

Further Reading