What's the difference between impenetrable and unpenetrable?
Impenetrable
Definition:
(a.) Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an impenetrable shield.
(a.) Having the property of preventing any other substance from occupying the same space at the same time.
(a.) Inaccessible, as to knowledge, reason, sympathy, etc.; unimpressible; not to be moved by arguments or motives; as, an impenetrable mind, or heart.
Example Sentences:
(1) During the entire process the passage between the lumen and the intercellular space remained blocked by the tight junctions, as shown by their impenetrability to ferritin.
(2) Veering between a patronising video , a vague report and impenetrable financial data does not amount to openness and accountability.
(3) Similar results were obtained with subcutaneous or intraperitoneal thymus grafts and with thymus grafts within cell-impenetrable diffusion chambers.
(4) On the other hand, the performance of a material that is liquid-proof is absolute--it is impenetrable and can be accurately described as impervious.
(5) In a 70-page document that was largely ignored and almost completely impenetrable, he said the US intended to treat cyberspace as a military battleground.
(6) This last phenomenon appears to precede the entry of some axons into the neuropil and suggests that the glia limitans may not necessarily represent an impenetrable barrier to the passage of regenerating axons into the CNS.
(7) It appears that the major part of the exclusion volume is due to the collagen-fibril as a rod and the dextran coil as an impenetrable sphere.
(8) Some of the games are based around recognisable sports (like football), others around ancient samurai conflicts – but whatever the theme, the nature of the action is absolutely impenetrable to the casual onlooker.
(9) Many of the particles could therefore pass freely through tightly woven fabrics with pores up to 10-15 micrometer which might seem to be impenetrable to whole corneocytes, typically larger than 30 X 40 micrometer in the hydrated state.
(10) QSI's intentions are no doubt honest but if players as important as goalkeepers can be owned by anonymous third parties in impenetrable offshore companies the potential for match fixing is clear.
(11) The more complex a system, the more unintelligible and impenetrable is the map of possible side effects.
(12) Spontaneous postoperative expulsion of an IUD resulted in blockage or distortion of the anastomosis in 1 monkey; and in another the anastomosis was patent for a least 5 months, but later became impenetrable.
(13) Lactoperoxidase-catalyzed iodination (LCI) was carried out under impenetrable conditions in intact electroplax (where protein exposure on the external surface is monitored) and in split electroplax (where total protein labeling on both the external and internal monolayers of the plasma membrane bilayer is monitored).
(14) For 45 minutes, Arjen Robben twisted and turned with the ball only to find himself confronted by an impenetrable thicket of blue-shirted Brazil defenders.
(15) And viewed again in this mood, Libeskind's building, with its blank excoriated surfaces, looks closed to understanding; in material as in spirit, impenetrable.
(16) Subsequent chemical analysis of sperm-penetrable and impenetrable samples indicated that the concentrations of mucus nondialyzable solids (NDS), mucins, and soluble proteins were significantly higher in impenetrable specimens.
(17) The mites ate the germ before the endosperm, leaving an impenetrable layer of crushed endosperm cells between these regions.
(18) Two decades after Tutu made it a shining city of defiance amid seemingly impenetrable darkness, Cape Town is finding economic liberation harder than the political kind.
(19) Insensitivities at 190 and 100 nm were common to all five types of spores, indicating that these wavelengths were particularly impenetrant and absorbed by the outer layer materials.
(20) By announcing a huge programme of bond purchases , much bigger relative to the eurozone bond market than the quantitative easing implemented in the United States, Britain, or Japan, the ECB president, Mario Draghi, erected the impenetrable firewall that had long been needed to protect the monetary Union from a Lehman-style financial meltdown.
Unpenetrable
Definition:
(a.) Impenetrable.
Example Sentences:
(1) Ability of mitochondria and submitochondrial particles (SMP) to generate a membrane potential on the addition of unpenetrating electron donors and acceptors and trimethylhydroquinone was used for specification of organization of the electron transfer chain.
(2) Unpenetrating anion transport inhibitor DIDS is shown to induce structural modifications of bands 3 of protein and AChE, while DNFB penetrating the membrane causes a significant reorganization of many membrane proteins (including spectrin) resulting in changes of transport and mechanical properties of erythrocytes.
(3) The proportions of unpenetrated and penetrated oocytes reaching metaphase II increased as the time of examination increased, reaching 70 and 65% 40 h after transfer, respectively.
(4) In the protrusions, sperm may be only partially incorporated and the unpenetrated portion appears to degenerate.
(5) Denuding cartilage from bone with an Excimer laser appears to be a precise operation in which the underlying bone is unpenetrated by the Excimer laser beam while the cartilage is completely ablated.
(6) Peak stresses in the apex of the acute angle of the branches were approximately three times unpenetrated hoop stress in the parent vessels.
(7) The Chinese nuclear industry is a black box unpenetrated by independent Chinese scrutiny, let alone foreigners.
(8) Tissue concentration of the drug was found to increase with time of penetration; however, in both horny layer and epidermis, this increase was followed by a significant decrease in concentration, (after 100 to 300 min), although a large amount of unpenetrated drug was present on the horny layer surface at all times.