lai·tance
| \ ˈlā-tᵊn(t)s
\
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Definition of laitance
: an accumulation of fine particles on the surface of fresh concrete due to an upward movement of water (as when excessive mixing water is used)
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“Laitance.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/laitance. Accessed 30 Jun. 2022.
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Time Traveler for laitance
The first known use of laitance was circa 1902
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