Zodiac celestial coordinate system, or more specifically an ecliptic coordinate system, which takes the ecliptic as the origin of latitude and the Sun's position at vernal equinox as the origin of longitude. The English word ' derives from ', the Latinized form of the Ancient Greek "zōidiakòs kýklos" (), meaning "cycle or circle of little animals". "Zōidion" () is the diminutive of "zōion" (, "animal"). The name reflects the prominence of animals (and mythological hybrids) among the twelve signs. The zodiac was in use by the Roman era, based on concepts inherited by Hellenistic astronomy from Babylonian astronomy of the Chaldean
Jacob (name) Jacob (name) Jacob is a common male given name and a less well-known surname. It is a cognate of James. Jacob is derived from Late Latin "Iacobus", from Greek "Iakobos", from Hebrew ("Yaʿqob", "Yaʿaqov", " Yaʿăqōḇ"), the name of the Hebrew patriarch, Jacob son of Isaac and Rebecca. The name comes either from the Hebrew root "ʿqb" meaning "to follow, to be behind" but also "to supplant, circumvent, assail, overreach", or from the word for "heel", "ʿaqeb". In the narrative of Genesis, it refers to the circumstances of Jacob's birth when he held on to the heel of his older