AstrologicalDictionary.com

Apahara or Bhukthi - Sub -period of a planet. In a ruling Dasa there will be sub-periods of other planets.

Applying and separating (aspects): whenever two planets are just about to form an aspect, the faster moving planet is said to be applying. As the two planets move away from the exact aspect they are called; separating

Aphelion - Away from the Sun. ( Ap - away and Helios - Sun )

Apogee - Away from the Earth. ( Ap - away Geo - Earth ).

Aquarius- 11th sign of the zodiac. Traits for therebellious, unique, independent, eccentric, detached, thinking outside the box. called KUMBHA in vedic astrology.

Aroodha - The Sign rising at the time of query, the time when the querent asks the question. .

Aries - The first Zodiacal constellation, from 0 degrees to 30 degrees of the Zodiac . Also called MESHA in Sanskrit.

Archetype - A term used by psycho-theorist Carl Jung to describe the essence of concepts and experiences. These can manifest in many different ways, according to the person’s culture, family norms, individuality, etc. In astrology, it is helpful to think of the planets, signs and houses as expressing and symbolising different levels of various archetypes in the human psyche. Pronounced: AR-keh-type.

Ascendant - The eastern horizon point in a chart. If you are born at sunrise, the Sun would be found around the Ascendant of your natal chart. The zodiac sign rising on the eastern horizon at the time of birth is considered significant and is called the Ascendant or Rising Sign. The Ascendant is also the cusp (starting point) of the 1st House in the chart. The Ascendant sign, and any planets in the 1st House, show the outer personality and self-expression. Sometimes abbreviated as Asc. called Lagna in Vedic Astrology.

Ashtama Rasi - Eighth House, the House of Death, the most dreaded house.

Ashtavarga - In Vedic astrology, Benefic points of planets in a Rasi or Zodiacal Constellation. Ashtakvarga is a part of Jyothish whereby you can find the strength or Bal of a planet. Ashtakvarga is based on relative positioning of planets from eachother and lagna. So 7 planets and lagna hence 8 or Ashtak.There is some discrapancy in the BAV scheme in modern texts today between Parasara's scheme and Varharamihira's.

Aspect - The geometric relationship between planets (or points) in the chart, measured in degrees of arc around the circle. When two planets are a certain number of degrees away from each other (give or take a certain "fudge factor" called an orb), these planetary energies relate to each other and combine together in a certain way, according to the aspect involved. In vedic astrology and western astrology aspects are used differenetly.
For example, in western astrology some aspects are stressful but motivating (Square, Opposition), some indicate talents or easy flowing energy (Trine, Sextile), and some are irritating but promote awareness (Quincunx, Semi-Sextile).
In Vedic astrology the aspect is usually by sign and not by degree. All planets aspect 7 from their position. Mars , Jupiter and Saturn have additional aspects . Mars aspects 4 and 8 , Saturn 3 and 6, Jupiter 9 and 5 .

Aspect Configuration- (In Western Astrology ) Three or more planets in aspect to each other, forming a kind of "circuit of energy" together. This means they operate collectively, as a group, resulting in an effect that is greater than the sum of their parts. This is a whole level of chart interpretation that goes beyond simply looking at planet-to-planet aspects. Bruno and Louise Huber have done some very impressive research into aspect patterns. Their book Aspect Pattern Astrology (now available in English) is highly recommended for more information about these fascinating planetary patterns.

Asteroid: Asteroids are thought to be remains of smashed planets. An asteroid is a very small " planet" in a band that revolves around the Sun between Mars and Jupiter.

Astrological age.-A period of time that is approximately 2150 years. It represents the time necessary for the vernal equinox to retrograde through the 30 degrees of any one of the constellations. Western Astrologers generally believe that the earth is now moving from the Age of Pisces into the Age of Aquarius

Astrology - The Science of Time. From Astra - Star and Logos - Science

Astro Therapy - Therapy prescribed for the afflictions of planets. It may be philosophic ( like Meditation and Attunement ) or Tantric ( Occult practices ).

Ayana - Solstice . There are 2 two types of Ayanas _ Uttarayana and Dakshinayana ( Northern progress of the Sun and Southern progress of the Sun). When the declination of the Sun is North - Uttarayana. When the declination of the Sun is south - Dakshinayana).

Ayanamsa - Precessional Distance. It was observed that the Tropical Zodiac precedes 1 degree in every 72 years. It takes 25920 years to precede 360 degrees and this is called the Precession of the Equinoxes.