Moment form is a phrase commonly used in mathematical analysis, particularly in the context of probability theory. It refers to the function that describes how a particular probability distribution changes over time. Synonyms for moment form include probability density function, probability mass function, and probability distribution function. Another synonym for moment form is characteristic function, which is the Fourier transform of the probability density function. The Laplace transform and the moment generating function are also related concepts that are sometimes used synonymously with moment form. Regardless of the term used, the moment form is a critical tool in probability theory and plays an important role in many areas of mathematics, including statistics, econometrics, and financial modeling.