What Does 'WD-40' Stand For?

Does the name of the iconic household product WD-40 reveal something about its invention?
The lubricating spray WD-40 is so named because it was the product of the 40th attempt at creating a water displacing substance.

WD-40 Celebrates Old-Age with 1950s-Style Can

History of WD-40

Acts @FACTS The secret formula for WD-40 is stored in a bank vault and has

WD-40 - Water Displacement, 40th formula

What's Inside WD-40? Know before you spray! – President Trading Online

WD-40 caps convenience

Have a question about WD-40 8 oz. Original WD-40 Formula, Multi-Purpose Lubricant Spray with Smart Straw? - Pg 1 - The Home Depot

WD-40 Precision Pen Lubricant 0.3-oz - Stops Squeaks, Lubricates Moving Parts, Protects Against Rust & Corrosion in the Hardware Lubricants department at

WD-40 Specialist General Purpose Penetrant 11 oz 1 pk - Ace Hardware

WD-40 Reissues 1950s Can, Capitalizes on Nostalgia

WD-40 - Wikipedia