Commemorative means made to keep the memory of a person or event. A commemorative stamp, a commemorative plaque, commemorative coins.
Post offices and mints live on them: a commemorative issue is sold to be kept rather than used, which is the whole business model. A commemorative plaque is the modest version, and Britain's blue ones mark where somebody lived.
1adjectivecommemorativeMade to keep the memory of a person or event.
“The mint issued a commemorative coin to mark the king's coronation.”
commemorative is a quality.
Latin commemorare means to call to mind, from com- plus memor, mindful.
New Latin
commemorātīvus
English, today
commemorative
1612; New Latin commemorātīvus, from commemorō. by surface analysis, commemorate + -ive, cognate with French commémoratif.
Etymology from Wiktionary, CC BY-SA