Examples of natural in a Sentence. 1  furniture made of natural materials. 2  The river forms a natural boundary between the two countries. 3  natural foods like whole grain bread and fresh vegetables. 4  Gray hair is one of the natural consequences of getting older. 5  a natural increase in the population. 6  the natural course of the disease.
Synthesis. Definition. noun, plural: syntheses. (1) (biochemistry) The production of an organic compound in a living thing, especially as aided by enzymes. (2) (chemistry) The act or process of forming a complex substance by combining or integrating two or more chemical entities, especially through a chemical reaction. (3) (psychiatry) The integration of different elements of the personality, in opposition to analysis.
any of numerous minute particles in the cytoplasm of cells, either free or attached to the endoplasmic reticulum, that contain RNA and protein and are the site of protein synthesis.