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tropostereoscope
tropostereoscope n. 
/ˌtrɒpə(ʊ)ˈstɪərɪə(ʊ)skəʊp/, /ˌtrəʊpə(ʊ)ˈstɛrɪə(ʊ)skəʊp/, /ˌtrəʊpə(ʊ)ˈstɪərɪə(ʊ)skəʊp/, /ˌtrɑpoʊˈstɪriəˌskoʊp/, /ˌtroʊpoʊˈstɛriəˌskoʊp/, /ˌtroʊpoʊˈstɪriəˌskoʊp/ [after German Tropostereoskop (1897 or earlier)] Psychology rare (now historical) a stereoscope with an arrangement for rotating the pictures, used in experiments on vision.
Brit. /ˌtrɒpə(ʊ)ˈstɛrɪə(ʊ)skəʊp/
, /ˌtrɒpə(ʊ)ˈstɛrɪə(ʊ)skəʊp//ˌtrɒpə(ʊ)ˈstɪərɪə(ʊ)skəʊp//ˌtrəʊpə(ʊ)ˈstɛrɪə(ʊ)skəʊp//ˌtrəʊpə(ʊ)ˈstɪərɪə(ʊ)skəʊp/U.S. /ˌtrɑpoʊˈstɛriəˌskoʊp/
, /ˌtrɑpoʊˈstɛriəˌskoʊp//ˌtrɑpoʊˈstɪriəˌskoʊp//ˌtroʊpoʊˈstɛriəˌskoʊp//ˌtroʊpoʊˈstɪriəˌskoʊp/ΘΚΠ
the world > physical sensation > sight and vision > optical instruments > instruments for observing > [noun] > stereoscope
stereoscope1838
phantascope1849
lenticular stereoscope1852
stereomonoscope1858
telestereoscope1858
stereophantasmascope1865
stereo1876
stereophantascope1890
tropostereoscope1900
kalloscope1901
rotoscope1907
1900 Amer. Jrnl. Psychol. 11 258 (table) Wheatstone stereoscope... Tropostereoscope. Ludwig.
1901 E. B. Titchener Exper. Psychol. I. ii. 272 Ludwig's tropostereoscope..is..a refined form of the tube stereoscope.
1930 Amer. Jrnl. Psychol. 42 263 The Os [= observers] looked at these fields of differently directed oblique parallel lines through colored glasses, different for each eye, set in the frame of the tropostereoscope.
2010 P. Bourcier et al. Nomencl. 3.0 for Museum Cataloging (ed. 3) v. 276 Medical instruments... Stereoscope, Medical: Amblyoscope. Tropostereoscope.
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