com·mem·o·rate 
/kəˈmɛməˌreɪt/ verb
com·mem·o·rates; com·mem·o·rat·ed; com·mem·o·rat·ing /kəˈmɛməˌreɪt/ verb [+ obj] 1 : to exist or be done in order to remind people of (an important event or person from the past)
▪ The festival commemorates the town's founding. ▪ The plaque commemorates the battle that took place here 200 years ago. 2 : to do something special in order to remember and honor (an important event or person from the past)
▪ Each year on this date we commemorate our ancestors with a special ceremony. ▪ All of the director's films will be shown to commemorate [=observe] the 50th anniversary of his death.
▪ The festival commemorates the town's founding. ▪ The plaque commemorates the battle that took place here 200 years ago.
▪ Each year on this date we commemorate our ancestors with a special ceremony. ▪ All of the director's films will be shown to commemorate [=observe] the 50th anniversary of his death.
