semisextile

Noun

 * 1)  An aspect of the planets when they are distant from each other the twelfth part of a circle, or thirty degrees.
 * 2) * 1825, Society of the Mercurii (LONDON), The Astrologer of the Nineteenth Century; Or, The Master Key of Futurity, and Guide to Ancient Mysteries, Being a Complete System of Occult Philosophy. ... By the Members of the Mercurii; Raphael, the Metropolitan Astrologer; the Editor of the Prophetic Almanack; and Other Sideral Artists. ... The Seventh Edition, Supervised ... by Merlinus Anglius, Junior, Gent. [i.e. R. C. Smith]., page 265: