What does the word offertory mean?

Usage examples for offertory

  1. Even the check that you put in the plate when you take the offertory up the aisle on Sunday morning? – The Mansion by Henry Van Dyke
  2. It would have been well for him if he could have followed on such occasions the memorable example of Lady Cook, who was so impressed by a begging sermon that she borrowed a sovereign from Sydney Smith to put into the offertory; and- the gold once between her fingers- found herself equally unable to give it or to return it, so went home, a pound richer for her charitable impulse. – Americans and Others by Agnes Repplier
  3. The offertory solo was hers. – The House of Toys by Henry Russell Miller