Definition of "infiltration" []

• The act or process of infiltrating. (noun)
• The state of being infiltrated. (noun)
• Something that infiltrates. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "These kinds of solutions may not work everywhere because infiltration is influenced by surficial geology, but it's an approach worth considering when cottages are built."
• "This should reduce any cold-air infiltration from the basement and is more practical than attempting to insulate the entire basement ceiling, which usually contains a maze of ducts or pipes from a central heater, water-heater pipes, electrical wiring, and bridging to help strengthen the joists."
• "Secret Invasion Saga traces the origins of the Skrull infiltration from the Elektra replacement to the Skrull†™ s very first visit to Earth."