Definition

1. Noun:
   • The organ of sight; the eye: "Oculus" is a formal or technical term for the eyeball or the eye as a whole, considered as the organ of vision.

Usage Examples

• Noun:
  • The optometrist examined each oculus carefully. (The optometrist examined each eye carefully.)
  • In architectural terminology, a circular window is also called an oculus, drawing a metaphorical connection to an eye. (This example shows a different, specialized meaning but uses the target word correctly. The primary biological meaning is the organ of sight.)

Advanced Usage

• "Oculus dexter (O.D.)": The right eye, used in medical prescriptions and clinical notes.
  • The prescription specified a different lens strength for the oculus dexter.
• "Oculus sinister (O.S.)": The left eye, used in medical prescriptions and clinical notes.
  • The infection was noted in the oculus sinister.

Variants and Related Words

• Ocular (adj): Of or connected with the eyes or sight.
  • The patient reported ocular pain.
• Binocular (adj): Involving or using both eyes.
  • Humans have binocular vision.

Synonyms

• Eye: The common, everyday term for the organ of sight.
• Eyeball: The globe of the eye.

Notes on Different Meanings

While the core definition provided is biological, it is important to note that "oculus" has a distinct, well-established meaning in architecture, referring to a circular opening at the top of a dome or in a wall. This is a separate meaning, not a compound word. Example: The Pantheon in Rome is famous for the oculus in its dome.

Noun

1. the organ of sight