1. having or using only one eye
2. designed for use with one eye

1. a small telescope designed to be held and used with one eye

Examples

• The patient had monocular vision after losing sight in one eye.
• She used a monocular microscope to examine the specimen.
• The bird watcher carried a compact monocular in her pocket.
• Monocular depth perception relies on visual cues like shadows and perspective.
• He adjusted the focus on his monocular to get a clearer view of the distant mountain.
• The jeweler examined the diamond through a monocular magnifier.
• Monocular telescopes are lighter and more portable than binoculars.