1
Stage 1 of 3
memorandum
Latin · ancient
"to be remembered"
'a thing to be remembered', from 'memorāre', to bring to mind
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Stage 2 of 3
memorandum
English · 1400s
"note to remember"
clerks and merchants headed their notes 'memorandum', be it remembered
3
Stage 3 of 3
memo
English · 1700s
"short note"
clipped from 'memorandum'; the office memo became standard in 1900s business
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