Understood by or meant for only the select few who have special knowledge or interest.
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.
Pretending to work when you are not actually working.
A massive object in space that emits a tremendous amount of energy.