- 1A centre point from which rays or radii proceed.More example sentences
- The caustic of a cardioid, where the radiant point is taken to be the cusp, is a nephroid.
- 1.1 Astronomy The apparent focal point of a meteor shower.More example sentences
- 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.
- Much of the first part takes place at night, in a black and white symphony of moving radiant points and rich shades of darkness.