Astrology Terms: Letter S

Browse 11 astrology terms starting with the letter S.

Reviewed byKenneth O. Patterson·Astrologer & Content Director

Showing 11 of 92 terms

S

Sagittarius

The ninth sign of the zodiac (November 22 - December 21), a mutable fire sign ruled by Jupiter. Sagittarius is associated with exploration, philosophy, and optimism.

Learn more: Zodiac Signs →

Saturn

The planet of structure, discipline, and responsibility. Saturn rules Capricorn and co-rules Aquarius, taking about 29.5 years to orbit the zodiac.

Learn more: Planets →

Scorpio

The eighth sign of the zodiac (October 23 - November 21), a fixed water sign traditionally ruled by Mars and modernly by Pluto. Scorpio is associated with intensity, transformation, and depth.

Learn more: Zodiac Signs →

Sect

An ancient astrological concept dividing charts into day (diurnal) or night (nocturnal) based on whether the Sun is above or below the horizon. Sect determines which planets are more favorable.

Sextile

A harmonious aspect formed when two planets are approximately 60 degrees apart. Sextiles indicate opportunities that require some effort to activate.

Learn more: Aspects →

Solar Return

A chart cast for the exact moment the Sun returns to its natal position each year, used to forecast themes and events for the year ahead.

Learn more: Solar Return Charts →

South Node

A mathematical point opposite the North Node, representing past-life skills and comfort zones. It indicates talents you already possess but need to move beyond.

Square

A challenging aspect formed when two planets are approximately 90 degrees apart. Squares create tension that motivates growth and action.

Learn more: Aspects →

Stellium

A cluster of three or more planets in the same zodiac sign or house, concentrating a significant amount of energy in that area of the chart.

Sun

The luminary representing your core identity, ego, and conscious self. The Sun spends roughly 30 days in each zodiac sign and determines your Sun sign.

Learn more: Planets →

Synastry

A compatibility technique that compares two birth charts by examining how planets in one chart interact with planets in another through inter-chart aspects and house overlays.

Learn more: Synastry Charts →

Frequently Asked Questions

What is an astrology glossary?▾
An astrology glossary is a comprehensive reference that defines the specialized terminology used in astrological practice. It covers zodiac signs, planets, houses, aspects, chart types, and advanced concepts like dignity, decan, and sect, helping beginners and experienced practitioners alike communicate clearly about astrological topics.
How many terms does astrology use?▾
Professional astrology uses hundreds of technical terms. This glossary covers over 80 of the most essential terms, including all 12 zodiac signs, 10 planets, 12 houses, 6 major aspects, 7 chart types, and dozens of key concepts like retrograde, stellium, and chart ruler.
What is the difference between a sign, a planet, and a house?▾
In astrology, planets represent fundamental drives (what energy), signs describe how those drives express themselves (how the energy manifests), and houses indicate where in life the energy plays out (which life area). For example, Venus (love) in Scorpio (intensely) in the 7th house (partnerships) describes someone who loves deeply and passionately in close relationships.
Do I need to know all these terms to read a birth chart?▾
No. Start with the basics: the 12 zodiac signs, the 10 planets, and the concept of houses. As you gain experience, you can explore more advanced terms like aspects, dignities, and chart patterns. This glossary is organized alphabetically so you can look up terms as you encounter them.