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Definitions

American Heritage® Dictionary of the English Language, Fourth Edition

  1. v. To spread or flow throughout; pervade: "Our thinking is permeated by our historical myths” ( Freeman J. Dyson). See Synonyms at charge.
  2. v. To pass through the openings or interstices of: liquid permeating a membrane.
  3. v. To spread through or penetrate something.

Century Dictionary and Cyclopedia

  1. To pass into or through without rupture or displacement of parts; spread through and fill the openings, pores, and interstices of; hence, to saturate; pervade: as, water permeates sand; the air was permeated with smoke.

Wiktionary

  1. v. To pass through the pores or interstices of; to penetrate and pass through without causing rupture or displacement; -- applied especially to fluids which pass through substances of loose texture; as, water permeates sand.
  2. v. To enter and spread through; to pervade.

GNU Webster's 1913

  1. v. To pass through the pores or interstices of; to penetrate and pass through without causing rupture or displacement; -- applied especially to fluids which pass through substances of loose texture.
  2. v. To enter and spread through; to pervade.

WordNet 3.0

  1. v. pass through
  2. v. penetrate mutually or be interlocked
  3. v. spread or diffuse through

Etymologies

  1. Latin permeāre, permeāt-, to penetrate : per-, through; see per- + meāre, to pass; see mei-1 in Indo-European roots.

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‘permeate’ has been looked up 2562 times, loved by 5 people, added to 43 lists, and has a Scrabble score of 12.