The Panhellenic Socialist Movement (Greek:Πανελλήνιο Σοσιαλιστικό Κίνημα, IPA:[paneˈlinio sosjalistiˈko ˈcinima]), known mostly by its acronym PASOK (Greek:ΠΑΣΟΚ, pronounced [paˈsok]), is a social-democratic political party in Greece and one of the country's major electoral forces between 1977 and 2012 elections.