memorandum

noun

mem·​o·​ran·​dum ˌme-mə-ˈran-dəm 

plural memorandums or memoranda ˌme-mə-ˈran-də 

1

: an informal record

also : a written reminder

2

: an informal written record of an agreement that has not yet become official

3

a

: an informal diplomatic (see diplomatic sense 2) communication

b

: a usually brief communication written for interoffice circulation

The company president sent a memorandum to every employee.

c

: a communication that contains directive, advisory, or informative matter

The memorandum called particular attention to the plight of refugees.

memorandums or memoranda?: Usage Guide

Although some commentators warn against the use of memoranda as a singular and condemn the plural memorandas, our evidence indicates that these forms are rarely encountered in print. We have a little evidence of the confusion of forms, including use of memorandum as a plural, in speech (as at congressional hearings). As plurals memoranda and memorandums are about equally frequent.

Synonyms

• directive
• memo
• notice

Examples of memorandum in a Sentence

I'm waiting for the memorandum that will explain the new vacation policy.

the studio executives depend on endless memoranda to keep track of what's going on at a movie shot on location

Recent Examples on the Web

The Hobart City Council on Wednesday approved a memorandum of agreement toward the formation of a joint task force with the town of Merrillville. —Deborah Laverty, Chicago Tribune, 22 Feb. 2025

An influential part of finalizing the decision was a ten-year exclusivity memorandum of understanding with the Italian craftsman’s organization Artisans of Florence, which oversees the operation of da Vinci museums across Italy, France, South Korea, Australia, and Brazil. —Francesca Aton, ARTnews.com, 21 Feb. 2025

In the government’s sentencing memorandum, prosecutors argued in support of sentencing Fister to 30 months in prison, a sentence at the lower end of the guidelines range. —Julia Marnin, Miami Herald, 19 Feb. 2025

The Washington Post reported earlier on Sunday that the I.R.S. was considering a memorandum of understanding that would give DOGE staff members broad access to its systems, including the Integrated Data Retrieval System, which contains taxpayer accounts. —Alan Rappeport, New York Times, 17 Feb. 2025

Word History

Etymology

Middle English, to be remembered, from Latin, neuter of memorandus, gerundive of memorare

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for memorandum

• fandom
• random
• tandem
• nonrandom

Kids Definition

memorandum

noun

mem·​o·​ran·​dum ˌmem-ə-ˈran-dəm 

plural memorandums or memoranda -də 

1

: an informal record or communication

2

: a brief written reminder

Legal Definition

memorandum

noun

mem·​o·​ran·​dum ˌme-mə-ˈran-dəm 

plural memorandums; plural memoranda -də 

1

: a usually informal written communication

2

: a record (as a note) which is used by a party seeking to enforce an otherwise oral agreement in accordance with the Statute of Frauds to prove that the other party agreed to a contract and which need not contain all the terms of the contract itself

3

: brief

4

: memorandum decision