Learner's definition of CONDENSATION
1 [noncount] : small drops of water that form on a cold surface
When we heat the house in the winter, condensation forms on the windows.
Condensation dripped from the air conditioner.
2 [noncount], technical : the process by which a gas cools and becomes a liquid 3 a [noncount] : the act or process of making something (such as a piece of writing) shorter: the act or process of condensing something b [count] : a piece of writing that has been made shorter: a condensed piece of writing