The crossword solution for the term POD PREFIX is TRI, which is a three-letter prefix. TRI is derived from the Greek word 'tria', meaning three. It is commonly used in scientific and medical terms to refer to something that has three parts or components. For example, a triad is a group of three people or things, and a tricycle is a three-wheeled vehicle. In this case, the prefix TRI is being used to refer to something related to pods, which are typically small, enclosed containers.