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aperture noun

  /ˈap.ə.tjʊə/ , /ˈap.ə.t͡ʃə/ , /ˈæp.ɚ.t͡ʃɚ/ , /ˈæp.ɚˌtjʊɹ/ , /ˈæp.ɚˌtʊɹ/ , /ˈæp.ɚˌt͡ʃʊɹ/
  • A small or narrow opening, gap, slit, or hole.
  • (astronomy, photography) The diameter of such a hole which restricts the width of the lightpath through the whole system. For a telescope, this is the diameter of the objective lens.
 ouverture
Posterior nasal aperture
choane
aperture synthesis
synthèse d’ouverture
synthetic aperture radar
RSO
very small aperture terminal
microstation terrienne
aperture synthesis telescope
TSO
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