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Meaning of optigraph | Babel Free

Noun CEFR B2

Definitions

A telescope with a diagonal eyepiece, suspended vertically in gimbals by the object end beneath a fixed diagonal plane mirror. It is used for delineating landscapes by means of an attached pencil.

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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See also

Optima optimacy Optimal optimalism Optimality optimality theory

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