memor
Latinmemory, remember, mindful
About This Root
The root memor comes from Latin, where two closely linked words sit at its heart.
memor was an adjective meaning "mindful, remembering" — describing a person who keeps something in mind and does not let it slip away. From it Latin built the noun memoria, "memory" — both the faculty of remembering and the act of holding the past in mind.
These two ideas — the power to remember and the act of keeping in mind — branch into the whole English family:
- memory is the faculty itself: the storehouse where the past is kept. (English later borrowed the same word for computer storage — a machine's "memory.")
- memorize / memorise (-ize/-ise, "to make") = to actively put something into your memory, to commit it to heart. (The -ize spelling is American; -ise is the British variant.)
- memorable (-able, "worthy of") = worth remembering, the kind of thing memory naturally holds onto.
From memoria came a cluster of words about written reminders — things that exist precisely because human memory fails:
- memorandum is Latin for "a thing to be remembered" (the gerundive of memorare) — a note written so it won't be forgotten.
- memo is just the everyday clipping of memorandum.
- memoir travelled through French (mémoire) and means a personal record of things remembered — a written-down memory of one's own life.
A second cluster is about honouring memory in public:
- memorial (-al, "relating to") = something that keeps a person or event in collective memory — a monument, a ceremony, a day set aside.
- commemorate (com- "together" + memor) = to remember together, as a community — to mark an anniversary or honour the dead with a shared act.
- memento comes straight from the Latin imperative "remember!" — so a memento is literally a "remember!" object, a keepsake that tells you not to forget.
Two members reshape the meaning with prefixes:
- immemorial = im- ("not") + memorial: so far back that it lies beyond memory — "from time immemorial" means older than anyone can recall.
- remember took a different road: Latin re- ("again") + memorari gave rememorari, "to bring back to mind," which through Old French became remembren. To remember is to make yourself mindful again of something you once knew.
The pattern across the family is simple: memor is always about the line between what stays in mind and what slips away — and most of these words exist because we are afraid of forgetting.
A memento is a keepsake — and the word is literally Latin for "remember!" Hold any memor- word in mind as a thing that fights forgetting: memory keeps it, memorize puts it in, a memorial honours it, and remember pulls it back.
Core Words Deep Dive
The few words from this family worth telling in full — one by one.
The most-used member, and the only one that isn't obviously a 'memor' word at first glance. It's re- ('again') + the Latin verb behind memory, so to remember is literally to bring something back into mind. The b crept in as the word passed through Old French — there's no b in the Latin. Note it's a verb (remember to call, remember doing), not a noun.
memor + -al ('relating to') = 'relating to memory.' What's interesting is it works as both adjective (a memorial service) and noun (a war memorial). The noun sense — a monument or ceremony — is now the more common one. It's collective memory made physical: a thing built so a community won't forget.
com- ('together') + memor + -ate (verb) = to remember together. The com- is the key: you don't commemorate alone, you do it as a community — a nation commemorates a battle, a family commemorates an anniversary. It always implies a shared, often formal act of honouring.
A small surprise: memento is the Latin imperative 'remember!' — a command frozen into a noun. So a memento isn't just any souvenir; etymologically it's an object that says 'don't forget.' Note the spelling: memento, not 'momento' (a very common misspelling, influenced by 'moment').
Related Roots
Greek mn- (as in mnemonic, amnesia) is the Greek branch of the same ancient root for 'remember' that Latin memor came from. Latin gave us everyday words (memory, remember); Greek gave us technical ones (mnemonic = memory aid, amnesia = loss of memory). Same idea, two languages.
The Germanic root mind (English's own word for the seat of memory and thought) traces back to the same prehistoric root as Latin memor — both descend from an ancient idea of 'keeping in mind.' memor came in via Latin/French; mind is native English.
Associated Words · 12
commemorate
To honour the memory of someone or something with a ceremony or memorial
immemorial
Extending back beyond memory; very ancient
memento
An object kept as a reminder or souvenir
memo
A short written note or message within an organization
memoir
A written account of personal experiences and memories
memorable
Worth remembering; striking and easily recalled
memorandum
A short written note or formal communication serving as a reminder
memorial
A monument or ceremony honoring someone; serving as a commemoration
memorise
To learn something by heart; to commit to memory
memorize
To learn something by heart; to commit to memory
memory
the ability to recall; a recollection; computer storage
remember
to bring back to mind from memory