WD-40

English

Etymology

Trademark; an abbreviation of "Water Displacement, 40th formula" or "40th attempt" used by Norm Larson of the Rocket Chemical Company of California, the oil's developer.

Proper noun

WD-40

A penetrating oil used as a lubricant and to protect electric circuits from moisture.

单词	WD-40
释义	WD-40 English Etymology Trademark; an abbreviation of "Water Displacement, 40th formula" or "40th attempt" used by Norm Larson of the Rocket Chemical Company of California, the oil's developer. Proper noun WD-40 A penetrating oil used as a lubricant and to protect electric circuits from moisture.
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