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permeate

[pur-mee-eyt] /ˈpɜr miˌeɪt/
verb (used with object), permeated, permeating.
1.
to pass into or through every part of:
Bright sunshine permeated the room.
2.
to penetrate through the pores, interstices, etc., of.
3.
to be diffused through; pervade; saturate:
Cynicism permeated his report.
verb (used without object), permeated, permeating.
4.
to become diffused; penetrate.
Origin
1650-1660
1650-60; < Latin permeātus past participle of permeāre to pass through. See per-, meatus
Related forms
permeation, noun
permeative, adjective
permeator, noun
interpermeate, verb (used with object), interpermeated, interpermeating.
nonpermeation, noun
nonpermeative, adjective
unpermeated, adjective
unpermeating, adjective
unpermeative, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for permeation

permeate

/ˈpɜːmɪˌeɪt/
verb
1.
to penetrate or pervade (a substance, area, etc): a lovely smell permeated the room
2.
to pass through or cause to pass through by osmosis or diffusion: to permeate a membrane
Derived Forms
permeation, noun
permeative, adjective
Word Origin
C17: from Latin permeāre, from per- through + meāre to pass
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for permeation
n.

1620s, noun of action from Latin permeare (see permeate).

permeate

v.

1650s, from Latin permeatus, past participle of permeare "to pass through" (see permeable). Related: Permeated; permeating.

Online Etymology Dictionary, © 2010 Douglas Harper
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permeation in Medicine

permeate per·me·ate (pûr'mē-āt')
v. per·me·at·ed, per·me·at·ing, per·me·ates

  1. To spread or flow throughout; pervade.

  2. To pass through the openings or interstices of, as a liquid through a membrane.

n. (-ĭt, -āt')
One that can permeate.
per'me·ant (-ənt) or per'me·a'tive (-ā'tĭv) adj.

permeation per·me·a·tion (pûr'mē-ā'shən)
n.
The process of spreading through or penetrating, as in the extension of a malignant neoplasm by continuous proliferation of the cells along the blood or lymph vessels.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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