Definition of flow line
1
: distinguishable differences (as of color, texture, or arrangement of crystals) indicative of flow having taken place in a plastic solid (as an igneous rock formation or wrought metal)
2
: a pipe or gutter carrying a flow of liquid especially at zero pressure head
3
: one of several microscopic lines on the surface of a coin created by the outward flow of metal during the striking process
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“Flow line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flow%20line. Accessed 8 Mar. 2021.
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