prism

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms
• Derivationally related forms:
prismatic
• Hypernyms:
polyhedron
• Hyponyms:
parallelepiped, parallelopiped, parallelepipedon, parallelopipedon, quadrangular prism, triangular prism
2. optical device having a triangular shape and made of glass or quartz;
used to deviate a beam or invert an image
• Syn:
optical prism
• Derivationally related forms:
prismatic
• Hypernyms:
optical device
• Hyponyms:
erecting prism
• Part Holonyms:
biprism, telescope, scope, spectroscope, prism spectroscope