Science / Astrology / Occidental Houses: Correctly, houses that lie in the western (occidental) portion of a horoscope, houses four through nine. Sometimes used to describe first and third quadrant houses (one, two, three, seven, eight and nine), those houses that are moving away from the vertical axis toward the horizon (in a clockwise direction in a horoscope).
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Science / Astrology / Relative Houses: House three, seven, and eleven, ruled naturally by air signs. Function focuses on human relationships. As a group, these houses form the Trinity of Association. MORE
Science / Astrology / Placidean Houses: The house system devised by the Spanish monk, Placidus de Tito (seventeenth century). Placidus' system, still widely used today, is based on the trisection of nocturnal and diurnal semi-arcs. The time MORE
Science / Astrology / Succedent Houses: From the Latin succedere, to follow; houses two, five, eight and eleven, which follow the angular houses. Also called the fixed houses, being ruled naturally by the fixed signs: Taurus, Leo, Scorpio a MORE