Diophantus

Diophantus, a Greek mathematician, born in Alexandria; lived presumably about the 4th century; left works in which algebraic methods are employed, and is therefore credited with being the inventor of algebra.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Dionysus * Dioscor`ides
Dion Chrysostomus
Dion of Syracuse
Dione
Dionysius the Elder
Dionysius the Younger
Dionysius of Alexandria
Dionysius, St., the Areopagite
Dionysius of Halicarnassus
Dionysius Periegetes
Dionysus
Diophantus
Dioscor`ides
Dioscuri
Diphilus
Diphtheria
Dippel, Johann Konrad
Dippel's Oil
Dircæan Swan
Dirce
Directory, The
Dirschau