In dictionaries:
barrier reef
Underwater structure parallel to coastline.
language barrier
Obstacle to communication between languages.
potential barrier
Obstacle that impedes particle's passage.
energy barrier
Obstacle to reaction progress energy.
barrier islands
Narrow, offshore, protective, sandy islands.
Schottky barrier
(physics) A metal-semiconductor junction which functions as a rectifier.
Vapor barrier
Material designed to resist moisture.
barrier island
Narrow, elongated, coastal, sand, island.
Barrier function
In constrained optimization, a field of mathematics, a barrier function is a continuous function whose value increases to infinity as its argument approaches the boundary of the feasible region of an optimization problem.
sound barrier
Limit where air resistance increases.
barrier layer
Separates substances, controls transport rates.
placental barrier
Selective membrane separating mother, fetus.
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