Astronomy
Definition of Ophiuchus
a large constellation (the Serpent Bearer or Holder), said to represent a man in the coils of a snake. Both the celestial equator and the ecliptic pass through it, but it is not counted among the signs of the zodiac. (as genitive
Ophiuchi /ˌäf(ē)ˈyo͞okī, ˌōf(ē)-/)
used with a preceding letter or numeral to designate a star in this constellation:the star Eta Ophiuchi