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imperial moth
Imperial Valley
imperialism
imperil
imperious
imperishable
imperium
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impermissible
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impermeable
im·per·me·a·ble [ im púrmee əb'l ]


adjective 
Definition:
 
not permitting passage through: not permitting the passage of liquid, gas, or other fluid.
See also  impervious

im·per·me·a·bil·i·ty [ im pùrmee ə bíllətee ] noun
im·per·me·a·ble·ness [ im púrmee əb'lnəss ] noun
im·per·me·a·bly [ im púrmee ə blee ] adverb
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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