Twelfth House:

Also known as the House of the Unconscious. It represents the hidden or unknown, the subconscious mind, the intangible, sleep, dreams, karma and spiritual debt. It rules solitude, confinement, fears, sorrow, secrets, hidden enemies, non-reality, institutions and charity.

Trine:

An arc of 120 degrees; the most harmonious aspect. In most cases, it joins planets in congenial Signs of the same Element. These energies combine with ease. The drawback, however, is the lack of challenge -- benefits are derived without effort.

Third House:

Also known as the House of Communication. It is the way in which we express ourselves and think on an intellectual level. It also represents consciousness, siblings, neighbors and our local environment, as well as early education, mechanical dexterity and short trips.

Tenth House:

Also known as the House of Social Status. It represents one's vocation, career, profession, ambition, reputation, authority, prestige and achievements, and it also rules government. It addresses one's parental influences.

T-square:

The configuration formed when two planets in opposition both square the same third planet (and form a 'T' in the heavens). This is a challenging focal point for planetary energies.

Synastry:

Comparing natal charts to find strengths and weaknesses in the area of compatibility.

Sun Sign:

What people think of as their 'Sign' or 'Star Sign.' It is the position of the Sun in the Zodiac at the moment of one's birth. The Sign placement of the Sun shows an individual's basic character. It is the core of one's potential and uniqueness as an individual.

Sun:

Represents the ego, self, willpower, your uniqueness and your individuality. It is your identity. It also represents the Father and male influences in one's life.

Stellium:

A meeting of three or more planets or points, usually occurring within one Sign or House. It is a focal point of energy.

Square:

An arc of 90 degrees which is traditionally regarded as unfavorable. It represents the struggle of two forces at cross purposes. A square brings stress and denotes obstacles which can inspire growth through concentrated effort.

Solstice:

When the Sun reaches its maximum declination. This occurs twice a year, at the beginning of Summer and Winter.

Solar Eclipse:

The point at which the Moon, Sun and Earth are aligned and the Moon blocks the Sun, making the Sun seem either totally or partially invisible. Occurs during a New Moon.

Sixth House:

Also known as the House of Health. It is about your job, routine, daily responsibilities, diet, employees, pets and physical fitness. It also addresses a fulfillment of duty and the conscious mind.