cornea

«cornea» in Mova's school dictionary: The clear, curved, dome-shaped layer at the front of the… — its meaning for a pupil, its sense in the lessons and examples.

part of speech

noun (a cornea, corneas)

meaning for a pupil

The clear, curved, dome-shaped layer at the front of the eye that covers the iris and pupil and helps focus light. tree →

sense in the lessons

In science lessons on the eye and seeing, pupils label the parts: cornea, iris, pupil, lens, retina, optic nerve. The cornea bends light first, then the lens finishes focusing it on the retina. In health and safety, goggles protect the cornea from chemicals and flying bits; a scratch on the cornea hurts a lot. Some people receive a donated cornea in a transplant. Phrases: «a scratched cornea», «corneal transplant».

examples

• Light passes through the cornea before it reaches the lens. tree →
• We labelled the cornea on our diagram of the eye. tree →
• Wear goggles to protect your cornea in the lab. tree →
• The doctor said I had a tiny scratch on my cornea. tree →
• The cornea has no blood vessels, so it is clear. tree →
• A cornea transplant can help some people see again. tree →

note

Said «KOR-nee-uh». Plural: corneas. The adjective is «corneal». Do not confuse the cornea (clear front window) with the iris (the coloured part) or the retina (at the back, where light is sensed).

Trees and pragmatics

Every meaning and example of «cornea» parsed by Mova, each sentence with its dependency tree and frames.