What is "slavianism"

Slavianism, Slavism or Slavdom (Russian: славянство) is a term with multiple meanings:

• In the Slavic countries it is used as a general term implying Slavic culture, civilization and identity.
• It could mean Slavic nationalism (disambiguation).
• It is one of the words for Slavic Neopaganism (Rodnovery).
• "the Slavonic race generally; Slavs collectively"