Examples from literature

• By avoiding murderous food, we may hope to become centenarians. 
• His prayer was that he might live to be a centenarian. 
• His predecessor, almost a centenarian in years, had been laid to rest a few months before. 
• Right after him another centenarian said he had lived over a hundred years, and he ascribed it to the fact that for the last fifty years he had hardly seen a sober moment. 
• The only safe principle is to maintain, as long as possible, the life of all—the centenarian or the embryo conceived since the sun set.