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.
Adj. 1. permeable-allowing fluids or gases to pass or diffuse through; permeable membranes; rock that is permeable by water. leaky-permitting the unwanted passage of fluids or gases; a leaky roof; a leaky defense system.. permeable-allowing fluids or gases to pass or diffuse through; permeable membranes; rock that is permeable by water. leaky-permitting the unwanted passage of fluids or gases; a leaky roof; a leaky defense system.