Radiant

Radiant
Ra|di|ant
der; -en, -en
<zu ↑...ant>:
1. scheinbarer Ausstrahlungspunkt eines Meteorschwarms an der Himmelssphäre (Astron.).
2. Einheit des Winkels im Bogenmaß;
ebener Winkel, für den das Längenverhältnis Kreisbogen zu Kreisradius den Zahlenwert 1 besitzt;
Abk.: rad.

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