单词 | equant |
释义 | equant/ˈiːkwənt /noun Astronomy, historical (In the Ptolemaic system) an imaginary circle introduced with the purpose of reconciling the planetary movements with the hypothesis of uniform circular motion.When the intricacies of epicycles, deferents and equants were explained to him Alfonso ‘the Wise’ is said to have remarked that if the Almighty had consulted him on the matter, he would have recommended something a little simpler…...
adjective Geology (Of a crystal or particle) having its different diameters approximately equal, so as to be roughly cubic or spherical in shape.It typically occurs as transparent flattened crystals, as small equant crystals, as intergrown masses of small lustrous crystals, and occasionally as stout or elongated twinned crystals....
OriginMid 16th century: from Latin aequant- 'making equal', from the verb aequare. |
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