MSDS is an acronym for Material Safety Data Sheet. Material definition: A material is a solid substance. Materials Chemistry synonyms, Materials Chemistry pronunciation, Materials Chemistry translation, English dictionary definition of Materials Chemistry. | Meaning, pronunciation, translations and examples ) The definition of the academic field of Materials Science & Engineering stems from a realization concerning every application of materials: it is the properties of the material that give it value. See also: hardness scale , number . A MSDS is a written document that outlines information and procedures for handling and working with chemicals.The document may also be called a safety data sheet (SDS) or product safety data sheet (PSDS). This can be useful as the new properties may be better suited for particular purposes. Changing material properties. Material. Information and translations of material in the most comprehensive dictionary definitions resource on the web. The degree of firmness of a solid, as determined by its resistance to deformation, scratching, or abrasion. Important; affecting the merits of a case; causing a particular course of action; significant; substantial. 2. Learn more. Material Science and Environmental Engineering: The Proceedings of 2016 International Workshop on Material Science and Environmental Engineering (IWMSEE2016) In conjunction with the opening of the Material Science Laboratory, the Leola plant also received the company's President's Safety Award. In materials science, strain is also very important variable, since it defines the deformation of an object. ‘The source material was great books, and the host was a famous radio journalist.’ ‘There, in a nutshell, is the source material for countless books.’ ‘I am continuing to gather material for the cat book and, in parallel, pulling poems together in one place.’ The relative penetrating power of a beam of x-rays, used both within the diagnostic range of energy and in radiation therapy; expressed in terms of half-value layer. When you bend a beam, you see it curve. Processes such as mixing, heating and cooling can change materials and their properties. Definition of material in the Definitions.net dictionary. hardness: ( hard'nes ), 1. Origin Mid 19th century; earliest use found in William Whewell (1794–1866), college head and writer on the history and philosophy of science. 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