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.
If you have a wooden floor and are keen to make it waterproof, there are two important questions to ask. The first is whether you actually mean water âproofâ or if you mean more resistant to water, and the second is how do you do it? There is a significant difference between âwaterproofâ and water resistant. Most wooden floors that have a finish will have some sort of water resistance built in. The likes of a lacquered or varnished floor however, will typically be more water resistant than an oil finished floor.