pentaprism - WordReference.com Dictionary of English

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- - pentagram
  - pentahedron
  - pentamer
  - pentameral
  - pentamerous
  - pentameter
  - pentamidine
  - pentane
  - pentangle
  - pentaploid
  - pentaprism
  - Pentateuch
  - pentathlon
  - pentatonic
  - pentavalent
  - Pentecost
  - Pentecostal
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  - pentlandite
  - pentobarbitone
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pentaprism

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Concise Oxford English Dictionary © 2008 Oxford University Press:
pentaprism/ˈpɛntəprɪz(ə)m/

▶noun a prism having a five-sided cross section with two silvered surfaces, giving a constant deviation of all rays of light through 90°.

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