oculus

/ˈɑkjələs/
noun
  1. A round or oval opening at the top of a dome, especially in a building, that lets in light and air.
    • The Pantheon in Rome has a famous oculus that opens to the sky.
    • Rain sometimes falls through the oculus into the building's center.
    • The architect designed an oculus to brighten the dark interior of the church.
  2. An eye or a structure that looks like an eye, especially in biology or technology.
    • The oculus of a fly is made up of many tiny lenses.
    • The robot's camera acts as an oculus, helping it see its surroundings.
    • In virtual reality, the headset's oculus tracks your eye movements.
  3. A brand name for a virtual reality headset made by Meta (often capitalized as Oculus).
    • The new Oculus model has better graphics and lighter weight.
    • She put on her Oculus to explore a virtual world.
    • Many gamers use an Oculus for immersive experiences.
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