penetration

penetration

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

---

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

---

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.

---

penetration

1. The intersection of two vaulting surfaces.

2. The consistency of a bituminous material expressed as the distance (in hundredths of a centimeter) that a standard needle vertically penetrates a sample of the material under known conditions of loading, time, and temperature. Unless otherwise specified, the load, time, and temperature are understood to be 100 g, 5 sec, and 25°C (77°F), respectively.