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Biology the fertilization of an ovum by a sperm in the Fallopian tube followed by implantation in the womb


A drawing of something that does not yet exist.
See also: Design

Conception (Conception Charts)

(religion, spiritualism, and occult)

Although genethliacal, or natal, astrology has settled on the birth time as the moment for casting the horoscope, astrologers have long felt that it would also be desirable to cast charts for the moment of conception. Ptolemy, for example, asserted that gender as well as certain other prenatal events could be deduced from the planets at the time of conception. However, the obvious difficulties involved in determining precise conception moments have effectively frustrated astrological research in this area. For the most part, the observation that Nicholas deVore made in his Encyclopedia of Astrology still applies: “The entire subject of prenatal cosmic stimulation is a welter of confused theorizing, which yet lacks confirmation in practice sufficient to bring about any unanimity of opinion.”

Some contemporary thinkers, nevertheless, have been intrepid enough to explore this largely uncharted domain. Of greatest significance has been the work of Eugen Jonas, a Czech psychiatrist who developed a system of astrological birth control based on the discovery that women have a cycle of fertility beyond the normal ovulation cycle—one based on the phase of the Moon. Jonas found, among many other interesting things, that the sign the Moon (which rules the principal of conception and motherhood) was in during conception determined the offspring’s sex—male in the case of masculine signs and female in the case of feminine signs.

In an effort to construct usable conception charts, some twentieth-century astrologers have picked up on the trutine of Hermes, an ancient principle for casting conception charts ascribed to the legendary Hermes Trismegistus that asserts that “the place of the Moon at conception was the Ascendant of the birth figure [i.e., conjunct the ascendant of the natal chart] or its opposite point [conjunct the descendant].” If Hermes was correct, then the trutine could be used to determine the precise time of conception in cases where the date and time of conception were known approximately. Prenatal charts relying on the trutine were seriously proposed in the early twentieth century by Walter Gornold (who wrote under the pen name Sepharial) in The Solar Epoch and by E. H. Bailey in The Prenatal Epoch.


Bailey, E. H. The Prenatal Epoch. New York: S. Weiser, 1970.
Brau, Jean-Louis, Helen Weaver, and Allan Edmands. Larousse Encyclopedia of Astrology. New York: New American Library, 1980.
DeVore, Nicholas. Encyclopedia of Astrology. New York: Philosophical Library, 1947.
Gettings, Fred. Dictionary of Astrology. London: Routledge & Kegan Paul, 1985.
Ostrander, Sheila, and Lynn Schroeder. Astrological Birth Control. Englewood Cliffs, NJ: Prentice-Hall, 1972.
Sepharial. The Solar Epoch. New York: S. Weiser 1970.



a particular way of understanding or interpreting an object, phenomenon, or process; the basic viewpoint on an object, phenomenon, or process, or the principal idea used to elucidate them. The term “conception” is also used to denote the underlying idea or constructive principle in science, art, technology, or politics.


Fertilization of an ovum by the sperm resulting in the formation of a viable zygote.
The mental process of forming ideas, especially abstract ideas.
References in periodicals archive ?
This study demonstrates that under subtropical conditions of Pakistan i) reproductive performance in Arabians is better than Thoroughbred mares; ii) mares remain cyclic throughout the year; and iii) conception rates were higher in mares bred during winter compared to summer months.
Today s data show us high conception rates are not inevitable, if young people receive the right support.
Although the synchronized ovulation rate and conception rate did not differ between treatments within each year, the Presynch protocol in which two injections of PGF administered 14 d apart preceded initiation of Ovsynch by 14 d increased (P<0.
Patients who had mild Asherman's syndrome in their initial diagnosis showed higher conception rate as did patients who developed triple line endometrial echoes after adhesiolysis.
COVENTRY is still on track to cut teenage pregnancies despite a small rise in conception rates, health chiefs insist.
6% drop in the teenage conception rate from the 1998 baseline to latest figures released for 2006 and Northumberland's teenage conception rate has dropped by 14.
The conception rate among under 18s is falling faster in the West Midlands than in the rest of the country, according to latest national figures, released today.
In North Tyneside, the under-18 conception rate has fallen from 61 to 52 per 1,000 in three years.
The National Statistics figures show that the teenage conception rate fell from 62.
Britain has the highest under-age conception rate in western Europe and Coventry's rate is higher than the national average, but these rates are falling due to increased education and initiatives.
During 1997-99 Coventry had an under-16 conception rate of 10.

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