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imp. gal.
impact
impact adhesive
impact aid
impact printer
impact statement
impact zone
impacted
impair
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impala
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impenetrable
im·pen·e·tra·ble [ im pénnətrəb'l ]


adjective 
Definition:
 
1. impossible to get in or through: not able to be passed through or entered
The woods formed an impenetrable barrier.
2. incomprehensible: impossible to understand or discern
impenetrable legal jargon
3. closed to influence: not open to intellectual or moral influences, impressions, or ideas

im·pen·e·tra·bil·i·ty [ im pènnətrə bíllətee ] noun
im·pen·e·tra·bly [ im pénnətrə 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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