Question

what is polymer or definition of polymer

Answer 1

Polymer is a chemical compound or mixture of compounds formed by polymerization and consisting essentially of repeating structural units.

Answer 2

Polymers are made up of many many molecules all strung together to form really long chains
its a large molecule

A polymer is a chemical compound where molecules are bonded together in long repeating chains. These materials, polymers, have unique properties and can be tailored depending on their intended purpose.
 For example, rubber is a natural polymeric material that is extremely useful.