15th letter of the Greek alphabet.
The fourth letter of the Greek Alphabet
The study of the production of very low temperatures.
A cloud of gas and dust in outer space.
The supposed phenomenon in which all Christians are taken to heaven and everyone else is left on Earth to perish.
1. Into separate parts or pieces: broken asunder.
2. Apart from each other either in position or in direction
1.the quality that makes a thing what it is; the essential nature of a thing.
2.a trifling nicety of subtle distinction, as in argument.
A massive object in space that emits a tremendous amount of energy.
Having kind feelings without need of reward.
A smoking mixture used by North American Indians as a substitute for tobacco.