memorial

noun

1. (obsolete)Memory; recollection.
2. Something, such as a monument, by which someone or something is remembered.

   “These mementoes or memorials [sculptural national monuments], though in the present age the unphilosophical and sciolistic spirit of some have led them to regard with contempt this method of honouring the illustrious great, excite a laudable admiration for the service or benefit to which they testify, and are living realities to perpetuate at once the respect entertained by the nation, both for the individual himself and the performance that has entitled him to their gratitude.”

   “Although the country branch lines may pass, they leave with those who have known them so well an ineffaceable memory[,] and for those who will follow after[,] a memorial in the form of embankment, cutting and tunnel with here and there a station building or railway cottage that time does not destroy.”

3. A chronicle or memoir.
4. (archaic)A note or memorandum.
5. A service of remembrance or commemoration.
6. A statement of facts set out in the form of a petition to a person in authority, a court or tribunal, a government, etc.

   “Captain Surman […] immediately addressed a memorial to the governor, stating that an act of Providence had sent him into port for the preservation of the lives of those on board; he therefore trusted he should be allowed to refit and depart.”

adj

1. Serving as a remembrance of someone or something; commemorative.

   “a memorial building”

   “There high in air, memorial of my name, / Fix the smooth oar, and bid me live to fame.”

2. Contained in the memory.

   “a memorial possession”

3. (archaic)Mnemonic; assisting the memory.

   “This succession of Aspirate, Soft, and Hard, may be expressed by the memorial word ASH.”