Definite volume refers to something which has a consistent, unchanging volume, which in practical terms may mean a static mass and density, or a predetermined shape, either of which will dictate volume. A cube with side length l has a definite volume because it can only be exactly one size.
One cup of raw plantains or one medium sized raw plantain contains: ~180-200 calories, 0.5 g total fat, 47-50 g carbohydrates, 3.5 g dietary fiber, 22 g sugar and 2 g protein. Because of it's high carbohydrate content, you need to monitor your portion, otherwise your blood sugars will spike.
Non-starchy vegetables have 1 to 16 grams of carbohydrates in a 1-cup serving, according to the USDA Nutrient Data Laboratory. This list includes green beans, broccoli, carrots, celery, beets, spinach, cucumbers, bell peppers and tomatoes. All types of lettuce only have about 2 grams in a 2-cup serving. The starchy vegetables -- corn and potatoes -- have more carbohydrates. One cup of raw corn has 27 grams, 1 medium potato has 26 grams and a medium sweet potato has 33 grams of carbohydrates.