Intuition
The instinctive grasp of themes, opportunities and difficulties reflected within the horoscope without reflection or resorting to any so-called astrological recipe books. The term comes from the Latin 'intueri' (to look at, contemplate). Intuition is the second most important prerequisite next to astrological knowledge required for horoscope interpretation.
Psychology
There are differing opinions on whether intuition is something that can be learnt. It is, however, beyond dispute that it cannot be achieved by practice alone, but if it is present it needs to be continually practised and expanded. Equally beyond dispute is the view that without astrological knowledge, it is inadequate for horoscope interpretation.
Images are an important element of intuition. The intuitive understanding of a particular relation is often communicated through images which then need to be translated into a form - not necessarily language - that is generally understood.
Astrology
From an astrological point of view, intuition is associated with the planets Uranus, Neptune, the signs of Aquarius and Pisces, together with the eleventh and twelfth houses.
The Uranian aspect is a quick, non-reflective analogous grasp of connections and main themes.
The Neptunian aspect is the deep perception of what lies beyond outward appearances. The astrologer Bernd A. Mertz also calls the Neptunian energy inspiration.
When these factors are especially prominent in the horoscope, or activated by triggers, for example a planetary transit, there is a potential for intuitive development.
Intuition also plays an important role in mysticism which is associated with Neptune, Pisces and the twelfth house.