I have a question: Is there a word for the missing liquid in an unopened bottle? If any of you can recall, bottles that contain liquid are not usually filled to the top; they have an area that isn't full, much like a bag of potato chips. Is there a word in English for this? I think there may be as I think I've heard it before, but I can't remember and just wanted to know.
Thank you for taking the time to find out.