WD-40 "Water Displacement 40th Formula" - got its name from being the 40th attempt at making it.

WD-40 "Water Displacement 40th Formula" - got its name from being the 40th attempt at making it.
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It was developed in 1953 by Dr. Norm Larsen,[1] founder of the Rocket Chemical Company, in San Diego, California. WD-40, abbreviated from the phrase "Water Displacement, 40th formula,"[2] was originally designed to repel water and prevent corrosion,[3] and later was found to have numerous household uses. @Curionic

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