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Hasil cari dari kata atau frase: Dioptra (0.00824 detik)
Found 1 items, similar to Dioptra.
English → English (gcide)
Definition: Dioptra
Diopter
\Di*op"ter\, ||Dioptra
\Di*op"tra\, n. [L. dioptra, fr.
Gr. ?. See 2d
Dioptric.]
An optical instrument, invented by Hipparchus, for taking
altitudes, leveling, etc.
[1913 Webster] ||
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