Kerat- is a word part that has the following meanings in the field of medicine.

1. The cornea. The cornea is the clear covering at the front of the eyeball. An example of the use of kerat- as a word part is the word keratoectasia, which is a bulging forth of the cornea.

2. Horny tissue or cells. Kerat- comes from the Greek word “keras” meaning “horn.”

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