oculus

IPA: ɑkjʌɫʌs

(architecture) A window or other opening that has an oval or circular shape (as of an eye).
The central boss of a volute.
An opening at the apex of a dome.

Examples of "oculus" in Sentences

And OD is short for oculus dexter, or right eye, not for overdose.
The walls rise to nearly 100 feet before embracing a large almond shaped ‘oculus’ window.
"oculus" was sometimes applied to things that were seen to resemble eyes, and one such thing was the bud of a plant.
I evoked the oculus in the coffered dome, an engineering feat as well as a symbolic gesture of colossal proportions.
But he is most jazzed by the atmospheric breakfast parlor, a domed lair that's dramatically lit by concealed skylights and a stained-glass oculus.
Skidmore, Owings & Merrill/John Blaustein An almond-shaped skylight or "oculus" is at the top of the building, through which sunlight shines in different patterns throughout the day.
"May 31, 2009: rose petals rain through the open oculus of Rome's Pantheon (the Basilica of Sancta Maria ad Martyres) during their annual celebration on the Solemnity of Pentecost while the Veni Sancte Spiritus is chanted."
What you notice as you approach Centra from the Metropark train station, a five- minute walk down the road, is its new fourth floor, which cantilevers out over a plaza and completes the square of the "L", leaving an oculus in the center.
St. John Cantius explains: In Rome on Pentecost, in the Pantheon (i.e. the minor basilica called S. Maria ad martyres) there is a beautiful and ancient custom of dropping rose petals through the circular oculus opening at the top of the dome.