/kay"toh/ , n.
1. Marcus Porcius /pawr"shee euhs, -sheuhs/ , ( "the Elder" or "the Censor" ), 234-149 B.C., Roman statesman, soldier, and writer.
2. his great-grandson, Marcus Porcius ( "the Younger" ), 95-46 B.C., Roman statesman, soldier, and Stoic philosopher.