Memorabilia are objects kept because of who or what they belonged to. Football memorabilia, a collection of memorabilia, sell the memorabilia.
The value is entirely in the association, which is why provenance matters more than the object: a shirt is worth a fortune or nothing depending on who wore it and whether that can be proved. It is plural and Latin, and it means things worth remembering.
1nounmemorabiliaObjects kept because of who or what they belonged to.
“His bedroom is full of football memorabilia, including signed shirts and old tickets.”
memorabilia is objects.
Latin memorabilia means things worth remembering, from memorabilis, from memorare, to bring to mind.
Proto-Indo-European
*(s)mer-
Ancient Greek
ἀπομνημονεύματα
Latin
memorābilia — things to be remembered
English, today
memorabilia
Built from
Latin memorābilia (“things to be remembered”); its use as noun is after Ancient Greek ἀπομνημονεύματα of the neuter plural of memorābilis (“memorable”). Its English use is perhaps after the Latin title Memorabilia of Xenophon’s collection of Socratic dialogues.
Etymology from Wiktionary, CC BY-SA