definition of
commemorate

[1] #1 commemorate v. [mark] mark by some ceremony or observation; "The citizens mark the anniversary of the revolution with a march and a parade". wn

[2] #2 commemorate v. [remember] call to remembrance; keep alive the memory of someone or something, as in a ceremony; "We remembered the 50th anniversary of the liberation of Auschwitz"; "Remember the dead of the First World War". wn

[3] #3 commemorate v. [memorialize, memorialise, immortalize, immortalise, record] be or provide a memorial to a person or an event; "This sculpture commemorates the victims of the concentration camps"; "We memorialized the Dead". wn