bicentenarianEtymologyFrom bi- + centenarian.nounOne who or that which is between 200 and 299 years old.“It took a long time — sometimes 10 or 15 years — for the fungus to kill a tree, especially if it were one of the patriarchs we have described. Even today, right in the vicinity of New York City, a very few of these bicentenarians or tricentenarians are desperately holding on to a thread of life.”