Hi vis overalls - High visibility overalls are used by workers on the roads, rails, and near cranes etc. Padded overalls - With padding material covering the inside for use in cold weather This definition was written in the context of Personal Protective Equipment (PPE)
Princeton's WordNet(0.00 / 0 votes)Rate this definition: conservation of mass, conservation of matter, law of conservation of mass, law of conservation of matter(noun) a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system. Chaldean Numerology.
The Law of Conservation of Mass is that, in a closed system, matter cannot be created or destroyed. It can change forms but is conserved. The Law of Conservation of Mass is a relation stating that in a chemical reaction, the mass of the products equals the mass of the reactants.