What is another word for hadal zone?
Pronunciation: [hˈadə͡l zˈə͡ʊn] (IPA) 
The hadal zone, which is the deepest part of the ocean, has several synonyms that are commonly used by researchers and scientists worldwide. Some of these synonyms include the abyssopelagic zone, the hadopelagic zone, and the ultra-abyssal zone. These terms all refer to the same part of the ocean, which is characterized by extreme pressure, darkness, and cold temperatures. Other synonyms that are often used to describe the hadal zone include the trench zone, the hadalpelagic zone, and the hadal deep. These terms are all helpful when discussing this unique environment and the organisms that inhabit it, whether studying the biology, geology, or ecology of the deepest parts of the ocean.
