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Barrier or
barrier in Wiktionary, the free dictionary. A
barrier or
barricade is a
physical structure which blocks or
impedes something.
Barrier may...
- The
Great Barrier Reef is the world's
largest coral reef system,
composed of over 2,900
individual reefs and 900
islands stretching for over 2,300 kilometres...
- A
barrier cream is a
topical formulation used in
industrial applications and as a
cosmetic to
place a
physical barrier between the skin and contaminants...
- The blood–brain
barrier (BBB) is a
highly selective semipermeable border of
endothelial cells that
regulates the
transfer of
solutes and
chemicals between...
- The
Thames Barrier is a
retractable barrier system built to
protect the
floodplain of most of
Greater London from
exceptionally high
tides and
storm surges...
-
Barrier islands are a
coastal landform, a type of dune
system and sand island,
where an area of sand has been
formed by wave and
tidal action parallel...
- A
barrier option is an
option whose payoff is
conditional upon the
underlying ****et's
price breaching a
barrier level during the option's lifetime. Barrier...
-
diffusion barrier is a thin
layer (usually
micrometres thick) of
metal usually placed between two
other metals. It is done to act as a
barrier to protect...
- In physics,
quantum tunnelling,
barrier penetration, or
simply tunnelling is a
quantum mechanical phenomenon in
which an
object such as an
electron or...
- The West Bank
barrier, West Bank wall or the West Bank
separation barrier, is a
separation barrier built by
Israel along the
Green Line and
inside parts...
