(engineering) Either a static or dynamic test of the relative density of sand, silt, etc. using a penetrometer.

plural of penetration test

present participle of double penetrate

plural of penetrating oil

Very low-viscosity oil.

plural of penetration aid

Synonym of penetrating oil

plural of penetrating fluid

(military) Any device or tactic used to increase an ICBM warhead's chances of penetrating a target's defenses.

A pricing strategy where the price of a product is initially set low to rapidly reach a wide fraction of the market and initiate word of mouth.