1. A penetration of an enemy's defense in depth and strength.
2. Making an important discovery.
3. A crack or break in a filter bed allowing the passage of floc or particulate matter through a filter. This will cause an increase in filter effluent turbidity. A break- through can occur: 1) when a filter is first placed in service, 2) when the effluent valve suddenly opens or closes, and 3) during periods of excessive head loss through the filter (including when the filter is exposed to negative heads). break through
4. An important discovery or development that solves or eliminates a problem that is preventing you from doing something is a breakthrough.
ETYM Latin percolatio.
The act or process of percolating, or filtering; filtration; straining.
perforation / pərfəreɪʃn̩ /
Množina reči perforation je perforations.
ETYM Cf. French perforation.
1. A line of small holes for tearing at a particular place.
2. One of a series of small holes (especially such a series for separating a sheet into parts).
3. The act of punching a role of holes (as for ease of separation).