noun.
One who is at least 100 years old. One who is past his or her tenth decade.
adjective.
Being at least 100 years old. Beyond one's tenth decade.
adjective.
Of or relating to a centenarian.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
being at least 100 years old
noun.
someone who is at least 100 years old
Word Usage
"It is a rather remarkable fact in connection with the examples of longevity cited that in almost every instance the centenarian is a person in the humblest rank of life."