The Collaborative International Dictionary of English v.0.48:

Artemis \Artemis\ n.
   1. 1 the virgin goddess of the hunt and the moon in Greek
      mythology; one of the Olympian deities, daughter of Zeus
      and Leto and twin sister of Apollo; identified with the
      Roman Diana.

   Syn: Cynthia, Diana.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Diana \Di*a"na\, n. [L. Diana.] (Myth.)
   The daughter of Jupiter and Latona; a virgin goddess who
   presided over hunting, chastity, and marriage; -- identified
   with the Greek goddess Artemis.
   [1913 Webster]

         And chaste Diana haunts the forest shade. --Pope.
   [1913 Webster]

   Diana monkey (Zool.), a handsome, white-bearded monkey of
      West Africa (Cercopithecus Diana).
      [1913 Webster]

WordNet (r) 3.0 (2006):

Artemis
    n 1: (Greek mythology) the virgin goddess of the hunt and the
         Moon; daughter of Leto and twin sister of Apollo;
         identified with Roman Diana [syn: Artemis, Cynthia]