con·den·sa·tion (kŏnˌdĕn-sāˈshən, -dən-)

1. The act of making more solid or dense. Also called compression.
2. The process by which a gas or vapor changes to a liquid.
3. The liquid formed when a gas is condensed.
4. The psychological process by which a single symbol or word is associated with the emotional content of a group of ideas, feelings, memories, or impulses, especially as expressed in dreams.
5. The dental process of packing a filling material into a cavity.