Comprehensive resource for understanding and mastering English idioms
The idiom "in the pipeline" means that something is planned or being prepared for future implementation or execution, but it has not yet been put into action or completed. It can also imply that a process or system is in place to ensure that something happens smoothly and efficiently.
The idiom "in the pipeline" is believed to have originated in the oil industry, where pipelines were used to transport crude oil from wells to refineries. The phrase likely refers to the process of laying a pipe through the ground or underwater, which involves many steps and requires careful planning before it can be completed. Over time, the idiom has come to be used in a broader sense to describe any planned or ongoing processes or systems that are not yet complete.