The prefix "pent-" is derived from the Greek word "penta," which means five. It is commonly used in English language to convey the meaning of having five or occurring every five. Some common synonyms for the word "pent-" include quinque, quint-, and five. Other synonyms for "pent-" are quinquegular, pentagonal, quintuple, quinary, pentameter, pentathlon and pentagon. These words are extensively used in scientific, mathematical, and geometrical terms to express the meaning of five. Overall, "pent-" is an essential prefix that is widely used in different fields of study and has a rich history.