The term PREFIX FOR GRAM OR PORT can be solved by the four-letter word TELE. The prefix 'tele' is derived from the Greek word for 'far off' and is used to describe something that is done or transmitted over a distance. It is commonly used in telecommunications, such as telephone, television, and telegraph. It is also used in other areas, such as telemedicine, telecommuting, and teleconferencing. In terms of grammar, it is used to describe words that refer to something that is done at a distance, such as telepathy or teleportation. In terms of port, it is used to describe ports that are used for communication over a distance, such as a teleporter.