Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  mushroom(noun) common name for an edible agaric (contrasting with the inedible toadstool) 2  mushroom(noun) mushrooms and related fleshy fungi (including toadstools, puffballs, morels, coral fungi, etc.)
A cornea transplant is an operation used to remove all or part of a damaged cornea and replace it with healthy cornea tissue from the eye of a suitable donor. A cornea transplant is an operation used to remove all or part of a damaged cornea and replace it with healthy cornea tissue from the eye of a suitable donor.
Corneal transplant surgery also is called penetrating keratoplasty or corneal grafting. Your eye is the recipient eye because it receives the graft. The other personâs cornea is the donor cornea or donor tissue because the cornea is being donated or given to you.orneal transplant surgery also is called penetrating keratoplasty or corneal grafting. Your eye is the recipient eye because it receives the graft. The other personâs cornea is the donor cornea or donor tissue because the cornea is being donated or given to you.