Homozonia

Definition

Two signs that share the same domicile lord are "like-engirded" — homozonia (Greek ὁμοζωνία, "sharing the same zone"). The doctrine softens aversion: signs that the standard rules would cut off from one another keep a thread of sympathy because the same planet rules both. Aries and Scorpio share Mars; Taurus and Libra share Venus; Capricorn and Aquarius share Saturn.

In Tradition

Brennan documents homozonia as one of three Hellenistic doctrines, alongside antiscia and equally-ascending signs, that soften aversion — the state of two signs unable to "see" each other by the usual aspects. His source is Paulus, Introduction chapter 12. Like-engirded signs in aversion turn sympathetic through their shared ruler, and a pair also joined by a real aspect carries double the strength of one bound by the ruler alone.

In Practice

When two signs in your chart fall in aversion — at a quincunx or a semi-sextile, where neither casts a ray to the other — check whether one planet rules both. If it does, they are like-engirded, and you can read a muted kinship between their affairs rather than a clean break. Paulus grades the bond: full when the two signs also hold a genuine aspect, partial when the shared ruler is all they have. Treat it as a mitigation, not an aspect in its own right.

Historical Origin

Brennan sets out the doctrine in Hellenistic Astrology (chapter 9, pp. 315-316), citing Paulus Alexandrinus, whose Introductory Matters (chapter 12, "Concerning Those Zoidia in Aversion and in Sympathy to Each Other," pp. 22-23, in Robert Schmidt's translation) is the primary attestation. Schmidt's footnote derives the term from the planets being "engirdled" by their zones of the zodiac.

Etymology

Origin: Greek. Meaning: like-engirding; sharing the same zone.

Further Reading

• Paulus Alexandrinus, Introductory Matters
• Chris Brennan, Hellenistic Astrology