Encyclopedia of Astrology

Encyclopedia of Astrology by Nicholas deVore is one of the most comprehensive reference works ever produced on classical, esoteric, and technical astrology. First published in 1947 and later preserved by Philip Graves and David Roell, this volume contains hundreds of alphabetically arranged entries covering terminology, techniques, astronomical concepts, occult vocabulary, and specialized branches of astrological practice.

The encyclopedia opens with the A–Z layout typical of pre-digital esoteric dictionaries, starting with entries like Accidental Ascendant, Accidental Dignity, Acronycal, and stretching across topics such as planetary phenomena, aspects, houses, fixed stars, electional rules, mystical terminology, geocentric and heliocentric distinctions, astrometeorology, ancient doctrines, historical figures, and more. Each definition is written with precision, blending classical sources, early 20th-century astrological schools, and ancient knowledge from Chaldean, Egyptian, Hindu, Greek, Roman, and Arabic traditions.

DeVore’s work is especially useful for readers seeking technical depth. Key entries include detailed explanations of planetary cycles, declinations, the construction of horoscopes, symbolic correspondences, esoteric doctrines, and the philosophical underpinnings of astrology. Concepts such as Aura, Astrotheology, Astrolabe, Astronomical Unit, Horary, Electional, Mundane, and Medical Astrology appear with careful cross-references, making this an indispensable tool for both students and practicing astrologers.

The encyclopedia also preserves rare terminology that is often missing from modern texts—giving readers insight into how astrology evolved through antiquity, medieval Europe, the Renaissance, and early modern occult revival movements. Its combination of historical scholarship, technical specificity, and esoteric breadth makes it the definitive reference for anyone serious about the astrological tradition.

✅ What You’ll Learn:

• The meanings of hundreds of astrological, astronomical, and esoteric terms used across ancient, medieval, and modern traditions.
• Technical definitions for aspects, dignities, declinations, planetary cycles, heliocentric vs. geocentric methods, and more.
• The structure and usage of traditional branches: Natal, Horary, Electional, Mundane, Medical, and Meteorological astrology.
• Classical symbolism, ancient doctrines, and mythological references underlying much of Western astrology.
• Historical context behind concepts such as Astrolabe, Astrotheology, and ancient priestly astronomical traditions.
• Esoteric terminology including Aura, Adept, Affinity, and Hermes-based occult vocabulary.
• How to decode older astrological writings using precise definitions preserved in this encyclopedia.

💡 Key Benefits:

• A single-volume complete reference guide for all major branches and concepts of astrology.
• Essential for interpreting older books, manuscripts, classical texts, and esoteric writings.
• Provides technical clarity on astronomical terms used in chart calculations.
• Offers cross-cultural insight—Chaldean, Egyptian, Greek, Roman, Hindu, and Arabic sources.
• Ideal for building a strong conceptual foundation for both beginners and advanced practitioners.
• Serves as a long-term desk reference for astrologers, researchers, and occult students.

👤 Who This Book Is For:

• Students of astrology who need clear definitions and historical context.
• Intermediate and advanced practitioners seeking a precise reference tool.
• Researchers of Western esotericism, Hermeticism, and ancient cosmology.
• Readers interpreting classical texts, early 20th-century astrology, or ancient manuscripts.
• Anyone wanting an authoritative lexicon covering all branches of astrological knowledge.

📚 Table of Contents:

• A–Z Alphabetical Entries:
  A, B, C, D, E, F, G, H, I, J
  K, L, M, N, O, P, Q, R, S
  T, U, V, W, Y, Z

Encyclopedia of Astrology By Nicholas deVore