category: Astrology Encyclopedia

Metonic Cycle

July 17, 2026Astrology Encyclopediaadmin

Definition

The Metonic Cycle is a period of approximately 19 tropical years, during which 235 synodic lunar months occur. After this interval, the phases of the Moon return to nearly the same dates in the solar year. Named after the ancient Greek astronomer Meton, the cycle became important for coordinating lunar months with solar calendars.

Astrological Meaning

In astrology, the Metonic Cycle provides a framework for comparing lunations separated by about 19 years. A New Moon, Full Moon, or eclipse may occur near the same zodiacal degree and calendar date as one from the earlier cycle, potentially reviving related themes. This is not an exact return: planetary placements, lunar nodes, houses, and personal circumstances will differ. It should also be distinguished from the Saros cycle, which more specifically tracks the recurrence of eclipses with similar astronomical geometry.

Why It Matters

The cycle helps astrologers place present lunations within a longer historical rhythm. Reviewing events, decisions, or emotional developments from 19 years earlier may reveal parallels without requiring identical outcomes. In natal work, its relevance depends on contacts to the birth chart and the broader transit picture, making it a contextual timing tool rather than a stand-alone predictive rule.

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Mesmerism

July 17, 2026Astrology Encyclopediaadmin

Definition

Mesmerism is a historical theory and practice developed by Franz Anton Mesmer in the eighteenth century. Mesmer proposed that an invisible force called animal magnetism flowed through living beings and could be directed to produce physical or psychological effects. Although his theory was rejected by modern science, mesmeric practices contributed to the later development of hypnosis. In occult literature, the term may also describe trance, fascination, personal magnetism, or heightened suggestibility.

Astrological Meaning

Mesmerism is not a standard planet, aspect, placement, or established predictive method in traditional astrology. When astrologers use the term symbolically, they may associate it with an individual’s capacity to captivate others, enter receptive states, or respond strongly to atmosphere and suggestion. Depending on the interpretive system, these themes may be explored through the Moon and Neptune for sensitivity and altered awareness, Mercury for mental influence, or Pluto for intensity and compelling presence. Such correspondences are modern and should not be treated as universal rules.

Why It Matters

Understanding mesmerism helps readers interpret older astrological and esoteric texts in their historical context. It also prevents vague references to “magnetism” from being mistaken for a specific chart technique. If the idea is applied to a natal chart, it is best considered alongside the whole chart, personal circumstances, and ordinary psychological explanations rather than used to claim supernatural control or inevitable influence.

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Meridional

July 17, 2026Astrology Encyclopediaadmin

Definition

Meridional means southern or relating to the meridian, the north–south great circle that passes through the zenith and the celestial poles. The word derives from the Latin for midday or south. In older astrological and astronomical texts, it may describe a southern location, direction, latitude, declination, or region of the heavens. Its precise sense therefore depends on the author’s coordinate system and historical context.

Astrological Meaning

In chart interpretation, meridional language is usually descriptive rather than a stand-alone symbolic factor. It may identify a planet positioned south of the celestial equator, a point associated with the southern meridian, or the southern portion of a particular diagram. This should not automatically be equated with being below the horizon, in the lower hemisphere of a natal chart, or in southern zodiac signs; those are different measurements. Traditional sources may attach interpretive weight to celestial direction, angularity, latitude, or declination, but each factor must be evaluated according to the technique being used.

Why It Matters

Recognizing this term helps readers interpret classical tables, chart instructions, and translated texts without confusing several kinds of “south.” Before drawing a conclusion, determine whether meridional refers to geographic latitude, celestial declination, the local meridian, or chart placement. That distinction can materially change calculations involving angles, planetary position, and house structure.

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Meridian Distance

July 17, 2026Astrology Encyclopediaadmin

Definition

Meridian Distance is the angular distance between a celestial body’s hour circle and the local celestial meridian. It is measured along the celestial equator, usually in degrees or hours, and may be identified as east or west of the meridian. Closely related to hour angle, it describes how far a planet or point has moved from an upper or lower meridian crossing at a specific time and location.

Astrological Meaning

In traditional and technical astrology, Meridian Distance helps establish a planet’s mundane position: its placement relative to the horizon, meridian, and house framework rather than only its zodiacal longitude. It can be used in certain house calculations, primary directions, and methods that assess a planet’s movement toward or away from an angle. A small distance from the upper meridian may indicate proximity to the Midheaven, although declination, latitude, and the chosen calculation system must also be considered.

Why It Matters

Meridian Distance matters because two planets with similar zodiacal positions can occupy different relationships to the local angles. This measurement helps astrologers distinguish celestial longitude from location-based chart position and supports more precise work with angularity and directional techniques. Its interpretation is therefore contextual: it refines chart geometry but does not, by itself, determine a planet’s strength, outcome, or meaning.

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Meridian

July 17, 2026Astrology Encyclopediaadmin

Definition

The meridian is the celestial great circle that passes through the north and south celestial poles, the observer’s zenith, and the nadir below. It divides the sky into eastern and western halves. Where the local meridian intersects the ecliptic, it establishes the Midheaven above and the Imum Coeli below. Because it is calculated for a particular time and location, the meridian is fundamental to chart orientation.

Astrological Meaning

In astrology, the meridian forms the vertical axis commonly called the MC–IC axis. The Midheaven side is associated with public life, reputation, vocation, visibility, and one’s contribution to the wider world. The Imum Coeli side concerns roots, home, ancestry, privacy, and inner foundations. Planets close to either end of this axis are often considered especially prominent. The meridian itself is an astronomical reference rather than a planet or interpretive influence.

Why It Matters

Understanding the meridian helps distinguish chart angles from house cusps. In many quadrant house systems, the Midheaven marks the tenth-house cusp and the Imum Coeli marks the fourth-house cusp. In whole-sign or equal-house charts, however, these points may fall within other houses. This distinction allows astrologers to interpret angular emphasis, houses, and public or private themes without treating them as interchangeable. Accurate birth time and location are important because even modest changes can shift the meridian and its contacts with planets.

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Algol, in the constellation Persus

July 17, 2026Astrology Encyclopediaadmin

Definition

Algol is a prominent eclipsing binary star in the constellation Perseus, traditionally identified with the severed head of Medusa. Also known as Beta Persei, it periodically appears to dim as one component passes in front of another. Astrologers treat Algol as a fixed star, interpreting it primarily through close conjunctions with planets, the Ascendant, Midheaven, or other sensitive chart points.

Astrological Meaning

In traditional astrology, Algol was associated with danger, loss of control, violence, and extreme circumstances. Contemporary interpretations often approach this symbolism more cautiously, connecting the star with intense emotion, confrontation, survival instincts, and experiences that demand composure under pressure. A strong Algol contact does not guarantee calamity. Its expression depends on the contacted planet or angle, the condition of that factor, and the wider natal chart. Constructively, it may accompany resilience, fierce determination, or a willingness to face subjects others avoid.

Why It Matters

Algol matters because fixed stars can add a distinctive layer to chart interpretation when their contacts are very close. Its position should be calculated for the chart’s date, since precession affects zodiacal longitude over time. Astrologers usually prioritize conjunctions and use a narrow orb rather than treating Algol like a planet or zodiac sign. Examining the complete chart helps prevent dramatic traditional descriptions from being taken literally or fatalistically.