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Impenetrable

Impenetrable

1. Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an impenetrable shield. Highest woods impenetrable to star or sunlight. (Milton)

2. (Science: physics) Having the property of preventing any other substance from occupying the same space at the same time.

3. Inaccessible, as to knowledge, reason, sympathy, etc.; unimpressible; not to be moved by arguments or motives; as, an impenetrable mind, or heart. They will be credulous in all affairs of life, but impenetrable by a sermon of the gospel. (Jer. Taylor)

Origin: L. Impenetrabilis; pref. Im- not _ penetrabilis penetrable: cf. F. Impenetrable.


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Albino echidna

... seen this in an echidna before, the echidna's are pretty well protected from predation as in the predator soon gets "the point" from its impenetrable mass of spines but im sure it would have to have some disadvantage being of this color?

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by vk4vfx
Tue Dec 08, 2009 3:59 am
 
Forum: Zoology Discussion
Topic: Albino echidna
Replies: 12
Views: 7756

Mathematical Biology, metabolism, origins of life, evolution

... organic chemistry that resulted in cellular life. It is no wonder then that the secrets of longevity its proponents hint is there, are entirely impenetrable to them; that the fact that birds and rats of the same mass have life spans an order of magnitude different, is considered just as much ...

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by GregorioKelly
Wed Oct 17, 2007 2:19 am
 
Forum: Evolution
Topic: Mathematical Biology, metabolism, origins of life, evolution
Replies: 0
Views: 4289

The Fiber Disease

... plaques of 'skin', (which is perhaps not really true skin), is termed the 'callus' by Cliff Mickelson, who thinks that this serves as a virtually impenetrable shield for the breeding ground of helminths below. This 'callus' has never ever been seen before, and the fibers, coloured and otherwise, ...

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by Cilla
Tue Apr 11, 2006 6:17 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5429395

The Fiber Disease

... holds these "towerblocks" together? The gelatinous goo of exopolysaccharide (EPS). This gunk is produced by the bacteria and forms an impenetrable shield that defends against antibiotics. It also safeguards the biofilm from hostile environmental conditions. "EPS is vital as it ...

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by J Jill
Sat Jan 28, 2006 6:51 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5429395


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