1. (noun)rhenium, Re, atomic number 75 a rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum Synonyms: ray, atomic number 75, rhenium
2. (noun)Ra, Re 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 Synonyms: rightascension, ray, radium, celestial longitude, atomic number 75, atomic number 88, rhenium