The term PLANT THAT MAY YIELD OIL can be solved by the 8-letter word REFINERY. A refinery is a facility that processes raw materials into products of higher value. Refineries are commonly used to process crude oil into petroleum products such as gasoline, diesel, and jet fuel. Refineries also produce other products such as lubricants, waxes, and asphalt. Refineries are an important part of the oil and gas industry, as they are responsible for turning raw materials into usable products.