Essential nutrients refers to classes of nutrients found in food. Essential nutrients are simply those that are vital for the normal growth, maintenance and development of the body. There might be a slight confusion about essential nutrients that must be addressed.
Definition of waterproof for English Language Learners. : 1  designed to prevent water from entering or passing through. : 2  designed so that water alone will not remove it.
1 : the action of one that sheathes something. 2 : material used to sheathe something; especially : the first covering of boards or of waterproof material on the outside wall of a frame house or on a timber roof.