This paper consists of five sections. The first section pinpoints the concept of presupposition tackling it from a linguistic perspective. The second section discusses the three basic properties of presupposition. The third section sheds some light on presupposition in comparison with two other meaning inferences, namely, entailment and conversational implicature. The fourth section discusses presupposition triggers. The fifth section gives an account of the six types of presuppositions. The paper ends in a conclusion which summarizes the major points discussed in the paper.