The meaning of the name Sigourney is The Conqueror. The origin of the name Sigourney is French. This is the culture in which the name originated, or in the case of a word, the language.
From a French surname spelled Sigourney or Sigournay. The American actress Sigourney Weaver (originally Susan) took the stage name Sigourney from a character in The Great Gatsby by F. Scott Fitzgerald.