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(religion, spiritualism, and occult)

A planet is said to be combust when it is within 8°30’ (many would say less) of the Sun. In traditional astrology, this was regarded as having a weakening (debilitating) effect on the planet involved. Contemporary astrologers have not found that this close conjunction with the Sun weakens planets, and, to the contrary, some researchers have asserted that such a position tends to strengthen the influence of the planets involved. The notion of combust might have been based on the observation that during partile conjunctions in which the Sun actually came between a particular planet and Earth (i.e., during occultations,) the matters and processes ruled by the planet involved in the conjunction were weakened. Certain twentieth-century experiments, such as those supporting the Kolisko effect (in which the metal associated with a given planet was less reactive during the planet’s occultation), would support such an interpretation.

Mercury, as the planet closest to the Sun, is most often involved in close conjunctions with the greater luminary. Observing people with combust Mercury, many modern astrologers have noted greater mental energy as well as greater powers of concentration in these natives. However, astrologers have also observed that this position, unless counteracted by other factors in the natal chart, causes people with combust Mercurys to be less able to see points of view other than their own.


Bach, Eleanor. Astrology from A to Z: An Illustrated Source Book. New York: Philosophical Library, 1990.
DeVore, Nicholas. Encyclopedia of Astrology. New York: Philosophical Library, 1947.
References in periodicals archive ?
Composition PDF/ photon Monte Carlo modeling of moderately sooting turbulent jet flames," Combust.
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Although there were similar riots in France in the 1980s and 1990s, this time there is an ominous sense that the numbers of disaffected Muslims in Europe may be reaching a critical mass where initially unrelated explosions of violence could spontaneously combust into a full-blown movement.
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The factory makes lithium, which can combust when it came into contact with air.
The boiler would be used to combust all sludge produced from its recovered paper recycling process.
I would also remind the author that when the shrill environmental books were written, the Delaware River would spontaneously combust, and Denver had worse air quality than Los Angeles.
That's when customers have such an awe inspiring time when trudging round the supermarket they feel compelled to spontaneously combust with emotion and fall on the necks of unsuspecting New Deal shelf stackers.
The whole place, however, was ablaze with light in which I felt I would combust at any minute.
Researchers studying mixtures of oxygen and hydrogen have found that the two gases--which normally combine explosively to form water (H2O)--appear to combust less readily under extreme pressure than they do under ordinary atmospheric pressure.
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13 memorandum, acting director general Jim Sydiongco cited the mobile phone's tendency to suddenly explode and combust even when turned off.