01 A line of pipe with pumping machinery and apparatus for conveying liquids, gases, or finely divided solids, such as petroleum or natural ga…
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1.
A line of pipe with pumping machinery and apparatus for conveying liquids, gases, or finely divided solids, such as petroleum or natural gas, between distant points.
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2.
fig. an information channel direct from the source.[fig.]
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3.
the set of stages and processes from the invention or design of a product to its ultimate use, production, or commercial sale. Used commonly in the phrase in the pipeline, i. e. still in preparation or under development.