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Meaning of alethoscope | Babel Free

Noun CEFR C1

Definitions

An instrument, invented in the 1860s, for viewing magnified pictures by means of a single lens inside a box. By varying the intensity of the light, the same picture can be shown as "daytime" or "nighttime".

historical

CEFR level

C1
Advanced
This word is part of the CEFR C1 vocabulary — advanced level.

See also

aletophyte Aletsch Aletschhorn Aletta Aleu aleukaemia

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