The term 'cellular prefix' refers to a set of words that are used to describe different types of cellular technology. The prefixes UNI, MULTI, ECTO, PHONE, and CYT all have three, four, or five letters and are used to describe various aspects of cellular technology. UNI stands for 'unicellular, ' which is a type of cell that is not divided into smaller parts. MULTI stands for 'multicellular, ' which is a type of cell that is divided into multiple parts. ECTO stands for 'ectoderm, ' which is the outermost layer of cells in an organism. PHONE stands for 'TELEPHONE, ' which is a device used to communicate over long distances. Lastly, CYT stands for 'cytoplasm, ' which is the material inside a cell that contains the organelles.