Definition of natural disaster : a sudden and terrible event in nature (such as a hurricane, tornado, or flood) that usually results in serious damage and many deaths The earthquake was one of the worst natural disasters of this century.
Synthesis, Chemical. the planned production of complex compounds from simpler compounds based on a knowledge of the reactantsâ chemical structure and reactivity. Chemical synthesis usually implies a sequence of several chemical processes (steps). In the early period in the development of chemistry, chemical synthesis was carried out mainly for inorganic compounds and was fortuitous in nature.
noun (syntheses) 1. the process of putting together separate parts to form a complex whole. 2. the result of such a process. In writing, synthesis is the process of combining the ideas of two sources in order to create a new idea. Just as using one source, synthesis depends on the authority of the source you are using and allows you a site in which to do your analysis. The Oxford English Dictionary gives a lot of definitions.