io

• POS: Noun
• HYPHEN: I=o

CIDE DICTIONARY

io, n. [L.; cf. Gr. "iw`.].

 An exclamation of joy or triumph; -- often interjectional.  [1913 Webster]

io, prop. n. [Gr. 'Iw`.].

•  In Greek mythology, the beautiful daughter of Inachus, king of Argos, Greece, who was changed by Hera (Juno), in a fit of jealousy, into a white heifer, and placed under the watch of Argus of the hundred eyes.
  Century Dict. 1906]

  "Greek mythology, too, knew her [Astarte] as I"  [Century Dict. 1906]
•  One of the large moons of the planet Jupiter, remarkable for its intense volcanic activity, as observed in fly-bys of space probes. It was named after the mythological Io.

  "The remarkable images of Io and Jupiter obtained by the Galileo 2 space probe to Jupiter and Hubble photographs are available at the web site of NASA. Reproduced here are:
  Surface of Io.
  Full disk of Io passing, over the clouds of Jupiter.
  Jupiter with Io in transit.
  More images are available at the NASA site."  [PJC]