condensation reaction biology definition
By Anne Marie Helmenstine, Ph.D. Condensation Reaction Definition: A condensation reaction is a chemical reaction between two compounds where one of the products is water or ammonia.Also Known As: Dehydration reaction. Examples: Reactions that produce acid anhydrides are condensation reactions.y Anne Marie Helmenstine, Ph.D. Condensation Reaction Definition: A condensation reaction is a chemical reaction between two compounds where one of the products is water or ammonia.