Ra Very Common

an intensely radioactive metallic element that occurs in minute amounts in uranium ores

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

(astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky; usually expressed in hours and minutes and seconds; used with declination to specify positions on the celestial sphere

"one hour of right ascension equals fifteen degrees"

Any of a series of moraines, in parts of Norway, that are long ridges covered with stones.

Initialism of rheumatoid arthritis.

The Egyptian god of the Sun.

Initialism of Royal Academy, the Royal Academy of Arts is an art institution based in London, England.

Initialism of rahmatu 'llahi alayh, that is Arabic رحمة الله عليه‎ (“God have mercy on him”), a eulogy used by Muslims in reference to honoured deceased.