presignify

/priˈsɪɡnɪfaɪ/
verb
  1. To indicate or show something in advance; to be a sign of something that will happen later.
    • The dark clouds presignify an approaching storm.
    • His nervous laughter seemed to presignify the bad news he was about to deliver.
    • In many cultures, certain dreams are believed to presignify future events.