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.
A stem cell transplant is a procedure used to replace damaged or diseased stem cells with healthy stem cells, according to Mayo Clinic. Also called a blood or marrow transplant, stem cell transplants are used to treat people with cancers and diseases such as leukemia and sickle cell anemia. Full Answer >.