The term 'turns edible' can be solved by the crossword solution 'RIPENS' (6 letters). Ripening is a process in which fruits and vegetables become softer, sweeter, and more flavorful as they mature. This process is caused by the production of ethylene gas, which is released by the fruit or vegetable itself. As the gas accumulates, it triggers a series of chemical reactions that cause the fruit or vegetable to soften and change color. Ripening also increases the nutritional value of the produce, making it more nutritious and easier to digest.