The term 'divided into two parts' can be expressed as 'bipartite, ' which is a nine-letter word. Bipartite is an adjective that describes something that is divided into two parts or sections. It is derived from the Latin word 'BI, ' meaning two, and 'partitus, ' meaning divided. Bipartite is often used to describe a situation in which two parties are involved, such as a contract between two people or a treaty between two countries.