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barrier |
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barrier 1. a. an exposed offshore sand bar separated from the shore by a lagoon b. (as modifier): a barrier beach 2. that part of the Antarctic icecap extending over the sea barrier [′bar·ē·ər] (ecology) Any physical or biological factor that restricts the migration or free movement of individuals or populations. (navigation) Anything which obstructs or prevents passage of a craft. (physics) Barrier [′bar·ē·ər] (ordnance) A passive acoustic detection system for submarines, consisting of hydrophones positioned on the ocean floor and connected by undersea cable to a land-based computer center. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| a damaged skin barrier, such as with contact dermatitis, has been shown to facilitate sensitisation to latex. Widespread use of antimicrobial products has prompted concern about emergence of resistance to antiseptics and damage to the skin barrier associated with frequent washing. With increasing exposure time, an increasing amount of pesticide penetrated the skin barrier in all experiments regardless of the presence of NPE in the donor phase (Figure 1). |
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