(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.
Indestructible
Definition:
(a.) Not destructible; incapable of decomposition or of being destroyed.
Example Sentences:
(1) Tim Nice-But-Dim may seem annoyingly indestructible, but by expanding the horizons of others, we can undermine him.
(2) But we loved it.” The block was only a few years old when the brothers moved in and has proved as indestructible as Chaplin’s reputation.
(3) Pushed by the press and fired by Britain’s seemingly indestructible institutional desire to be loved by America, prime ministers feel the need to seize first friend status and hug it close.
(4) Alliances can wither or be destroyed, but partnerships of purpose are indestructible.
(5) They too lost their compass, went too far and believed themselves indestructible.
(6) Forty years ago, there were lots of old and oldish people in the movies but they didn’t pretend to be young and indestructible, because where’s the drama in that?
(7) The aggressive Humvee mindset spawned a less antisocial alternative: the SUV (sport utility vehicle), with its high-up military-style vantage point, from which to spot approaching danger, and with macho bumpers signalling solidity and indestructibility.
(8) We feel it highlights that family is an indestructible bond between people that is universal and it doesn’t matter how it is made or what it looks like.
(9) Joined previously successful combo and is still around, misunderstood, but seemingly indestructible.
(10) Technically the challenge, brilliantly met, must have been the handling of that enormous flock of free-range characters and the disposing of the maddening, mysterious, apparently indestructible Widmerpool.
(11) The authors analyse the results of the treatment of peptic ulcer of the stomach and duodenum by indestructible red laser radiation in 65 patients.
(12) It may not be the end of his political life -- given his seemingly indestructible appeal to sections of the Italian population.
(13) Crucially, he was seen as a born survivor and indestructible powerbroker, a rain-maker who could not be bypassed or sidelined.
(14) To Swansea fans he’s our rock, an indestructible superhero.
(15) Microplastics are near-indestructible in natural environments.
(16) The words should be indestructible but they are fleeting.
(17) The invention of CDs meant we all wanted to replace our record collections with wonderful new shiny, "indestructible" CDs and we were all happy to fork out £16 or £17 for each one; it also became de rigeur to have a library of videos prominently displayed in the corner of your living room.
(18) As a consequence of these facts, perfect metals for application in implants must have a short repassivation period and mechanically indestructible surface oxides.
(19) "What is interesting, on reflection, is how comfortable everyone was with the notion that banks were somehow indestructible," he said.
(20) They are not indestructible, and there are not as many of them as we think.