penetration (redirected from incursion)

penetration

The successful unauthorized breach of a security perimeter. See penetration test.

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penetration

1. Marketing the proportion of the total number of potential purchasers of a product or service who either are aware of its existence or actually buy it

2. another name for depth of field

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penetration [‚pen·ə′trā·shən]

(aerospace engineering)

That phase of the letdown from high altitude to a specified approach altitude.

(metallurgy)

The distance from the original surface of the base metal to that point at which weld fusion ends.

A surface defect on a casting caused by molten metal filling voids in the sand mold.

(ordnance)

Distance to which a projectile sinks into a target.