To call to remembrance by a special act or
   observance; to celebrate with honor and solemnity; to honor, as a
   person or event, by some act of respect or affection, intended to
   preserve the remembrance of the person or event; as, to commemorate the
   sufferings and dying love of our Savior by the sacrament of the Lord's
   Supper; to commemorate the Declaration of Independence by the
   observance of the Fourth of July.