Pronunciation: [ɡˈasɪz ˈʌp] (IPA) 
The correct spelling of the phrasal verb "gasses up" is with two s's. The word "gases" is a verb meaning to fill with gas, and the phrasal verb "gasses up" means to fill a vehicle with fuel. The phonetic transcription of "gasses up" is /ˈɡæsɪz ʌp/ with a hard "g" sound, an "a" sound like in "cat," a "s" sound, an "i" sound like in "sit," a "z" sound, and an "uh" sound like in "buttercup."
"Gasses up" is a phrasal verb that refers to the act of filling a vehicle's fuel tank with gasoline or another type of gas. This term is derived from the verb "gas," which means to provide gas or fuel to a machine or engine. When someone "gasses up," they typically go to a gas station or fueling station where they can purchase and pump the required amount of gas into their vehicle.
The phrase "gasses up" is commonly used in informal contexts and conversations, particularly when discussing the action of refueling a car, motorcycle, or any other type of motor vehicle. It can also be used figuratively to describe the act of preparing for a journey or setting oneself up for success. In this sense, "gassing up" can be understood as gathering the necessary resources, knowledge, or motivation to achieve a particular goal or undertake a specific endeavor.
"Gasses up" often implies the physical action of inputting gasoline or gas into a vehicle but can also carry a metaphorical undertone denoting the process of getting ready or energizing oneself for a task. Overall, this phrasal verb mainly revolves around the act of filling a vehicle with fuel but can also extend to encompass the broader concept of preparation in various contexts.
The term "gasses up" is a colloquial expression that is derived from the noun "gas" and the verb "up" in English. However, it is important to note that the phrase "gasses up" may not necessarily have distinct etymology of its own; rather, it is a combination of two separate words, each with their own etymology.
The word "gas" originated from the Dutch word "gas", meaning "vapor" or "gaseous substance". It was introduced into English in the early 17th century. The etymology of the Dutch word can be traced back to the Greek word "khaos", meaning "emptiness" or "void".
On the other hand, the word "up" has Old English origins and is derived from the Proto-Germanic word "upp", which means "upward" or "on the upper side".
