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
Constantine (name) Constantine (name) Constantine ( or ; Latin: Cōnstantīnus, Greek: , "Kōnstantînos") is a masculine given name and surname which is derived from the Latin name "Constantinus", a hypocoristic of the first names Constans and Constantius, both meaning "constant, steadfast" in Latin. The names are the Latin equivalents of the Bulgarian name 'Стоян' and the Greek name "Eustáthios" (Εὐστάθιος), meaning the same, not changing, standing. The name "Constantine" is still very common in Greece and Cyprus, the forms Κώστας (Kostas), Κωστής (Kostis) and Ντίνος (Dinos) being popular hypocoristics. The popularity stems from the eleven Roman and Byzantine emperors (beginning with St.