solid angle of the sun

solid Adjective

— If something is solid, it is hard and keeps its shape. When he went out in the morning, the water had frozen solid. After it has cooled, the solid gold is moved to a safer place. — If something is solid mathx/math, its only material is mathx/math. Copper mixed with silver made a much cheaper spoon than solid silver. — If something is solid, it has not spaces inside or between. The traffic was a solid line of cars as far as you could see. The wall looked solid, but when he knocked it made a hollow sound. — If something is solid, it is good and will not break or change easily. Don't worry about the chair. It's solid as a rock. The police had enough solid evidence to put him in jail.

solid Noun

— A solid is a material which keeps its shape. It is not a liquid (like water) or a gas (like air).

angle Noun

— When two straight lines come together, they make an angle. A 90° angle is called a right angle.

of Preposition

— Made using. It is a house of cards.

the Determiner

— Used, instead of a, to reference something specific, already known to exist. Compare "I read a book." and "I read the book." — Used with a stress, to show that the word following is special. Are you the John Smith that I went to school with? — Used with an adjective that acts like a noun to mean all of the people concerned The poor are always with us. — Used with superlatives forms of adjectives and adverbs. You are the best.

sun Proper noun

— The sun is the star that can be seen during the day from the Earth. In the sky, it looks like a yellow circle. The sun is very hot.

sun Noun

— A star, especially a star that is at the center of a solar system. Scientists have found other suns with planets around them.