The term 'Briny Septet' is a combination of seven words related to the SEA. The first word is 'Seas', which is a large body of water that is partially enclosed by land. The second word is 'SALINE', which refers to the saltiness of the OCEAN. The third word is 'SEA', which is a large body of SALINE water that covers much of the Earth's surface. The fourth word is 'OCEAN', which is the largest body of SALINE water on Earth. The fifth word is 'ASEA', which means 'at SEA' or 'on the SEA'. Together, these seven words form a descriptive phrase that captures the essence of the OCEAN and its salty waters.