American Heritage Dictionary of the English Language, 5th Edition
Latincygnus (“swan”), from Ancient Greek κύκνος (kyknos, “swan”)
Cygnus Sentence Examples
A gigantic swan, Cygnus falconeri, is known from the Zebug cavern in Malta.
Conspicuous among these are the great white swan (Cygnus anatoides), the black-necked swan (Anser nigricollis), the antarctic goose (Anas antarctica) and the " race-horse " or " steamer duck " (Micropterus brachypterus).
In the 5th century B.C. the Athenian astronomer Euctemon, according to Geminus of Rhodes, compiled a weather calendar in which Aquarius, Aquila, Canis major, Corona, Cygnus, Delphinus, Lyra, Orion, Pegasus, Sagitta and the asterisms Hyades and Pleiades are mentioned, always, however, in re Corvus.
The names in which Ptolemy differs from modern usage are: - Hercules (iv -yovaotv), Cygnus ("Opvts), Eridanus (IIora tos), Lupus (Onpiov), Pegasus (17r7ros), Equuleus ("Iirirov irporogi i), Canis minor (IIpoidwv), and Libra (XnXai, although "vyos is used for the same constellation in other parts of the Almagest).