English Explanatory Dictionary

Penrose stairs

English dictionary entry

Meanings

noun
  1. An impossible loop of endlessly ascending and descending stairs, or an optical illusion appearing to depict such a loop.

Pronunciation

LL-Q1860 (eng)-Vealhurl-Penrose stairs.wav

Word forms

Penrose stairs

Etymology

After a drawing by Lionel Penrose and Roger Penrose.

Synonyms

impossible staircase Penrose staircase Penrose steps
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