Science / Astrology Glossary

Precession Of The Equinoxes: The gradual westward shift (about 50' each year) of the equinoctial points along the ecliptic due to the ecliptic due to the rotational movement of the poles of Earth's axis. This phenomena . . . View Full Definition

Prenatal Epoch: The astrological moment of conception. According to Ptolemy, the natal Ascendant or Descendant coincides with the Moon's zodiacal position at the prenatal epoch, ten lunar months prior to bi . . . View Full Definition

Primary Directions: Originally, a mathematically complicated system of progressing a horoscope based upon the diurnal rotation of the Earth. The term is now loosely applied to any method of advancing house cusp . . . View Full Definition

Prime Meridian: The great circle that passes through Earth's poles and Greenwich, England (0° longitude), from which longitude is measured east and west. See also longitude, geographical or terrestrial.

Prime Vertical: The great circle that rises vertically from the east point of the horizon and passes through Earth's zenith and nadir.

Profile: See 'Report.'

Progressions: The general term applied to any method of advancing the planets and house cusps of a natal horoscope to a particular time after birth.

Promittor: The slower moving of two planets in aspect; the receiver of an aspect.

Ptolemy, Claudius: A great astrologer, astronomer and geographer of the second century (ca. 100-178 A.D.) who developed the theory that Earth is the motionless center of the universe about which the planets, s . . . View Full Definition

Pythagoras: Greek 569-470 B.C., studied in Egypt. Left nothing in writing but is supposed to said that the Earth, Moon and planets and fixed stars revolved round the Sun. Copernicus in the sixteenth cen . . . View Full Definition

Quadrant: One of the four sections of a horoscope, each bounded by two angles not opposite each other.

Quadrate, Quartile: Synonymous with square. See Square.

Quadrupedian Signs: Alternate term for bestial signs. See bestial signs.

Quadruplicity: One of the three qualitative groups (cardinal, fixed, mutable) in which each of the four member signs share a common mode of expression.

Qualities: The Signs are classified by their Qualities: Cardinal, Fixed or Mutable. Also referred to as modalities or quadruplicities.

Quincunx: A minor hard aspect, separating distance 150°, the fifth multiple of the twelfth harmonic (30°, semi-sextile). Interpretation focuses on adjustmental needs. Also called an inconjunct.

Quindecile: A minor easy aspect, the fifteenth harmonic, 24°.

Quintile: The fifth harmonic, 72°, a minor easy aspect.

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