Pronunciation: [d͡ʒˈʌmpɪŋ sˈiːt] (IPA) 
The word "jumping seat" refers to a foldable seat found in vehicles such as airplanes, buses or trucks. The IPA phonetic transcription for this word is /ˈdʒʌmpɪŋ siːt/. The first part, "jumping," is spelled with the letter "j" which represents the phoneme /dʒ/, followed by the "u" sound /ʌ/ and the "m" sound /m/. The second part, "seat," is pronounced with the /siːt/ vowel sound as in the word "meat."
The term "jumping seat" refers to a temporary or extra seat placed in a vehicle or transport means, typically used when there is a need for an additional passenger to travel. It is commonly found in various modes of transportation such as cars, buses, airplanes, and boats.
A jumping seat may be designed differently depending on the mode of transport and the specific purpose it serves. In cars, for example, it usually refers to an additional seat that can be folded or stowed away when not in use. This type of seat is commonly found in larger vehicles like vans or SUVs, where space allows for the inclusion of extra seating. In buses, a jumping seat might refer to a folding seat that can be installed in the aisle or a small seat attached to the front of the main seat for added capacity.
In airplanes, a jumping seat is often used to accommodate airline staff or passengers with special needs. These seats are usually compact and installed near the cabin crew area or emergency exits. They are designed to be easily foldable to ensure minimal disruption to passengers in case of an emergency evacuation.
The term "jumping seat" derives its name from the idea that these seats are either movable or can be accessed quickly whenever required, allowing for flexibility in managing passenger capacity. Overall, the jumping seat serves as a temporary seating solution, adapting to different transport needs and requirements.
The term "jump seat" originated in the aviation industry. It refers to an additional seat or foldable chair in an aircraft cockpit or cabin, not meant for regular passengers, but for pilots, attendants, or any other person requiring temporary seating.
The word "jump" in this context does not derive from its usual definition of leaping, but rather from a nautical term "jumper" or "jump" which means a hastily constructed seat. In sailing ships of the past, a "jump" was a temporary seat made by placing a plank or board across some other object, often used by officers or passengers. This term was later adopted in the aviation industry to refer to the extra seat in aircraft.
