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Multi-word Results
| barrier island |
a long narrow sandy island formed parallel to a shore protecting it from erosion. |
| barrier reef |
a ridge of coral running parallel to a coast. |
| color barrier |
unspoken social code of racial segregation or discrimination, esp. in sports, education, public service, and the like. |
| Great Barrier Reef |
the largest coral reef system in the world, located in the Coral Sea off the northeastern coast of Australia. |
| sonic barrier |
the large increase in aerodynamic resistance experienced by aircraft approaching the speed of sound; sound barrier. |
| sound barrier |
a hypothetical barrier to aircraft as they approach the speed of sound, suggested by the abrupt increase in aerodynamic drag near that velocity; sonic barrier. |
| thermal barrier |
the maximum flight speed of a given supersonic aircraft in the atmosphere that is set by aerodynamic heating effects. |
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