What is another word for recirculation?
Pronunciation: [ɹɪsˌɜːkjʊlˈe͡ɪʃən] (IPA) 
Recirculation is a term used to describe the process of something returning to its original source or circulating again. There are several synonyms for recirculation, including re-circulation, reiteration, repetition, recycling, regeneration, and looping. These words indicate the circular nature of a process or system and suggest that something is being used again or repeated. Recirculation is commonly used in environmental engineering to refer to the treatment of wastewater and the reuse of water in industrial processes. It is also used in HVAC systems to describe the circulation of air or the reuse of heat. The synonyms for recirculation help to convey this concept of circularity in various contexts.
