A centenarian is a person who has attained the age of 100 years or more.
Much rarer, a supercentenarian is a person who has lived to the age of 110 or more.
Many notable and famous individuals have become centenarians. They include the following:
... is a two-stage process involving two different chlorophyll photosystems. First, a photon is absorbed by the chlorophyll core of photosystem II, exciting two electrons which ...