The noise that the plane makes is sometimes so loud that you cannot hear any other noise. Sound is a type of energy. Sounds are produced when an object vibrates. When this happens, the air around the object also vibrates. These vibrations in the air travel as sound waves. A jet engine makes a great deal of sound energy. The engine sounds loud when it is close, but you can sometimes hear the noise when the plane is even several miles away from you.
Definition of Polymer. A large molecule consisting of chains or rings of linked monomer units, usually characterized by high melting and boiling points.
polymer-Computer Definition. (1) Meaning many parts, it is a material constructed of smaller molecules of the same substance that form larger molecules. For example, plastic is a synthetic polymer, while protein is a natural polymer.See polymer semiconductor.plural polymers). ( 1 organic chemistry) A long or larger molecule consisting of a chain or network of many repeating units, formed by chemically bonding together many identical or similar small molecules called monomers. 2  A polymer is formed by polymerization, the joining of many monomer molecules.