Last Updated：2025/11/20

A point source from which radiation is emitted. / (astronomy) The apparent origin, in the night sky, of a meteor shower.

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radiant

Source Word

radiant

IPA(Pronunciation)

Noun

Japanese Meaning

放射線を放出する点源 / （天文学）流星群の見かけの起点

The physicist marked the radiant on the diagram to indicate where the emissions originated.

物理学者は、図に放射源を記して、放射がどこから放出されているかを示した。

Sense（1）

A point source from which radiation is emitted.

Sense（2）

(astronomy) The apparent origin, in the night sky, of a meteor shower.

Sense（3）

(geometry) A straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.

radiants

（ plural ）