Ra (Noun)
Meaning 1
An intensely radioactive metallic element that occurs in minute amounts in uranium ores.
Classification
Nouns denoting substances.
Examples
- Radium is a highly radioactive, silvery-white, shiny metal that is the heaviest known member of the alkaline earth metals.
- Radium was discovered in 1898 by the French physicist and chemist Marie Curie and her husband Pierre Curie.
- Radium has a melting point of 700 degrees Celsius and is a member of the group of elements known as the alkaline earth metals.
- The radioactivity of radium is so intense that it is highly luminous, giving off a blue glow in the dark.
- The name 'radium' comes from the Latin word 'radius,' meaning 'ray,' due to the rays emitted by the element as it decays.
Synonyms
Hypernyms
Meaning 2
(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".
Classification
Nouns denoting spatial position.
Synonyms
Hypernyms
Meaning 3
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.
Classification
Nouns denoting people.
Examples
- In ancient Egyptian mythology, Ra was considered the sun god, often depicted with the head of a hawk, a universal creator who governed the sky, the earth, and the underworld.
- As a supreme deity, Ra's authority and powers transcended all other gods in the Egyptian pantheon.
- With his rise to prominence, Ra eventually merged with the god Amen as Amen-Ra, ultimately becoming the king of the gods in the Theban triad.
- As Amen-Ra, he played a central role in ancient Egyptian worship and spirituality, bringing unity to a complex pantheon of gods and goddesses.
- According to ancient myths, the journey of Ra, in the form of the solar barge, brought life and energy to the world through the twelve hours of daylight.