Definition of radiant point in English:

radiant point

noun

1A centre point from which rays or radii proceed.
辐射源
Example sentencesExamples
- The caustic of a cardioid, where the radiant point is taken to be the cusp, is a nephroid.
1. 1.1Astronomy The apparent focal point of a meteor shower.
  〔天文〕（流星雨的）辐射点
  Example sentencesExamples
  Generating a sky map on 8-12-2004, we find that the radiant point will be high in the northeastern sky, not far below the zenith.
  Much of the first part takes place at night, in a black and white symphony of moving radiant points and rich shades of darkness.
  The sickle is the western portion of Leo and that is the radiant point for the meteor showers.
  Trace some backwards: they all lead to a radiant point in the constellation Gemini.

单词	radiant point
释义	Definition of radiant point in English: radiant point noun 1A centre point from which rays or radii proceed. 辐射源 Example sentencesExamples The caustic of a cardioid, where the radiant point is taken to be the cusp, is a nephroid. 1.1Astronomy The apparent focal point of a meteor shower. 〔天文〕（流星雨的）辐射点 Example sentencesExamples Generating a sky map on 8-12-2004, we find that the radiant point will be high in the northeastern sky, not far below the zenith. Much of the first part takes place at night, in a black and white symphony of moving radiant points and rich shades of darkness. The sickle is the western portion of Leo and that is the radiant point for the meteor showers. Trace some backwards: they all lead to a radiant point in the constellation Gemini.
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