Noun(1) an intensely radioactive metallic element that occurs in minute amounts in uranium ores(2) ancient Egyptian sun god with the head of a hawk; a universal creator; he merged with the god Amen as Amen-Ra to become the king of the gods(3) (astronomy(4) the network in the reticular formation that serves an alerting or arousal function
Noun(1) an intensely radioactive metallic element that occurs in minute amounts in uranium ores(2) ancient Egyptian sun god with the head of a hawk; a universal creator; he merged with the god Amen as Amen-Ra to become the king of the gods(3) (astronomy(4) the network in the reticular formation that serves an alerting or arousal function