Aksha Axis : An imaginary line joining North and South Pole
Akshamsa : An imaginary line drawn parallel to the equator
Agni Tatwa Rasis : (Fiery Signs) = Aires, Leo and Sagittarius
Atichara (Acceleration : Planets take a specific time to pass from one Sign to another. If a planet moves faster than its usual speed and passes faster from one sign to another, then the planets is said to be in Atichara (Acceleration).
Adhika Masa : The additional lunar month counted to facilitate correlation between the Solar and Lunar years. Thus the month does not possess any Sankramana.
Adhika Varsha (Luni-Solar year) : There are 366 days once in every 4 years as per Julius Calender. In that particular year, there happens to be 29 days in the month of February.
Adhimitra Graha (Best Friendly Planet) : Planet having natural friendship and temporary friendship during Transit period also are called Adhimitra Graha.
Adhi Satru Graha (Enemy planet) : The Planet which is Natural enemy to another planet and having enemity during transit period with other Planet.
Adhomukha Natchatra : Bharani, Krithika, Ashlesha, Makha, Moola, Vishaka, Uthiram, Uthrashada and Uthrabadra are called Adhomukha Stars.
Adhomukha Rasis : This called as Sirodaya Rasis as the are raised by their heads. They are Gemini, Leo, Virgo, Libra, Scorpio and Aquarius.
Annaprasanna (First Feeding of child) : The auspicious time at which the baby is given food for the first time.
Apachaya Rasi : The houses 1-2-4-5-7-8-9-12th houses are called apachaya rasis.
Abhijit : the 4th quarter of Uthrashada Star which is equal to 24 minutes in duration
Abhijit Rasi : The 4th sign counted from the sign where the sun is raising.
Abichara : The ritual conducted by Tantric methods for evading Evil Purposes.
Abhyuktha Moola : Junction point time between the Starts Jyeshta and Moola which is the last 2 ghatis of Jyeshta and 2 ghatis of Moola.
Amatya Graha : Planet having second highest number of degrees in position as per Graha Sputa in Jaimini system of predictions.
Artha-Trikona Rasi : The 2nd, 6th and 10th houses are called as Artha Trikona signs
Alpaayu : (Short span of life). Death between the age of 20 and 32.