Io

Io, in the Greek mythology a daughter of Inachos (q.v.), beloved by Zeus, whom Hera out of jealousy changed into a heifer and set the hundred-eyed Argus to watch, but when Zeus had by Hermes slain the watcher, Hera sent a gadfly to goad over the world, over which she ranged distractedly till she reached Egypt, where Osiris married her, and was in connection with him worshipped as Isis.

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

Invisible, The * Iodine
Intellect
Interlaken
International, The
Intuition
Intus-susception
Invalides, Hôtel des
Inveraray
Inverness
Inverness-shire
Invisible, The
Io
Iodine
Iodoform
Iolcus
Ion
Iona
Ionia
Ionian Islands
Ionic Order
Ionic School
Iowa