prism definition, prism meaning | English dictionary

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prism

  

      n  
1    a transparent polygonal solid, often having triangular ends and rectangular sides, for dispersing light into a spectrum or for reflecting and deviating light. They are used in spectroscopes, binoculars, periscopes, etc.  
2    a form of crystal with faces parallel to the vertical axis  
3      (Maths)   a polyhedron having parallel, polygonal, and congruent bases and sides that are parallelograms  
     (C16: from Medieval Latin prisma, from Greek: something shaped by sawing, from prizein to saw)  


Nicol prism  
      n   a device composed of two prisms of Iceland spar or calcite cut at specified angles and cemented together with Canada balsam. It is used for producing plane-polarized light  
     (C19: named after William Nicol (?1768--1851), Scottish physicist, its inventor)  
English Collins Dictionary - English Definition & Thesaurus  
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accretionary wedge   , prism         
      n     (Geology)   a body of deformed sediments, wedge-shaped in two dimensions or prism-shaped in three dimensions, that has been scraped off the surface of the oceanic lithosphere as it moves downward beneath a continent. The sediments are added to the continental edge  


Nicol prism  
      n   a device composed of two prisms of Iceland spar or calcite cut at specified angles and cemented together with Canada balsam. It is used for producing plane-polarized light  
     (C19: named after William Nicol (?1768--1851), Scottish physicist, its inventor)  
prism         
      n  
1    a transparent polygonal solid, often having triangular ends and rectangular sides, for dispersing light into a spectrum or for reflecting and deviating light. They are used in spectroscopes, binoculars, periscopes, etc.  
2    a form of crystal with faces parallel to the vertical axis  
3      (Maths)   a polyhedron having parallel, polygonal, and congruent bases and sides that are parallelograms  
     (C16: from Medieval Latin prisma, from Greek: something shaped by sawing, from prizein to saw)  

English Collins Dictionary - English Definition & Thesaurus  

See also:

Nicol prism, prim, porism, purism

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