rhizoverbBeta
DictionaryapertureOpening
noun

aperture

AP-ur-chur/ˈæpərtʃʊr/

An opening that allows something to pass through.

Daylight enters through the small aperture in the wall.

Close view through the small round opening in a dark wall: a narrow shaft of daylight crosses the aperture into shadow.
Etymology
apertureLatinopening

Latin apertura named an opening or hole. The optical sense specializes that ordinary idea: an instrument’s exposed opening allows light to pass through.

In context

Lecturio Medical2:52
… an opening called the superior thoracic aperture or the thoracic inlet. And this inlet or aperture is bordered by the T1 vertebra …
Thoracic Anatomy: Complete Guide to Skeleton, Sternum & Ribs | Lecturio Medical

More examples

  • The plate contains several circular apertures.
  • A smaller camera aperture lets in less light.
  • She examines the object through a narrow aperture.

Forms

aperture · apertures

Similar words

opening
Opening is the ordinary term; aperture often refers to a defined gap through which light or material passes.
gap
A gap is any separation; an aperture commonly has a purposeful or bounded shape.