Science / Astrology Glossary

Radical: Having to do with the natal horoscope.

Radical Chart: The natal horoscope. In horary astrology, the term radical applies to a chart deemed readable by virtue of the Ascendant being greater than 3° and less than 27° in any sign.

Radical Position: The position a planet occupies in a natal horoscope.

Radix: From the Latin, literally root. A natal horoscope.

Rapport Measurement: From the French, literally related measurement; applied to progressions based on advancing a planet's natal position one degree for each year after birth.

Reading: See 'Report.'

Reception: Shortened form of mutual reception. See mutual reception.

Rectification: The correcting of an inexact birthtime or the determining of an unknown birthtime through astrological methods.

Refranation: The failure of an applying aspect to culminate, when the significator turns retrograde before reaching partile.

Regiomontanus: The German astrologer (fifteenth century) who devised the house system that bears his name. This system is based upon twelve equal divisions along Earth's equator projected upon the ecliptic.

Relative Houses: House three, seven, and eleven, ruled naturally by air signs. Function focuses on human relationships. As a group, these houses form the Trinity of Association.

Report: An interpretation of one's birth chart. Also known as delineation.

Retrograde: When a planet appears to be traveling backwards from our perspective on Earth. The energy of a retrograde planet is less assertive and more internalized.

Retrograde Application: Term used in reference to a retrograde planet which, because of its retrograde motion, applies to an aspect with another planet. If both planets are moving toward each other, the term mutual . . . View Full Definition

Retrograde Motion: The apparent backward motion of a planet when it appears, as observed from Earth, to reverse its natural direction of travel and move backward in the zodiac.

Revolution: One complete orbit or cycle. In a natal chart, a planet's return to its natal degree upon completing a circuit of the map.

Right Ascension: Measurement along the celestial equator eastward from 0° Aries that describes planetary positions in terms of degrees, minutes and seconds, not zodiacal signs. Sidereal time expressed in unit of arc.

Rising Planet: Any planet that is near the Ascendant in the natal horoscope. Rising planets will have a significant influence on the personality.

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