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.
Letâs talk about what water-resistant means. It means the fabrics used generally arenât 100% waterproof. The most common fabrics are nylon and polyester, which are measured in Denier. Denier is based on a natural standard: a single strand of silk is approximately one denier.