Dictionary-enhanced plural guide
What is the Plural of “Memorandum”?
Learn the singular and plural noun forms, the rule behind the plural, and examples that show the form in context.
Singular and Plural Form of Memorandum
Memorandum is the singular noun form. Memoranda is the plural form.
Dictionary meaning: a brief written communication used inside a company or institution to share information or announce decisions
Why is the Plural of Memorandum “memoranda”?
The Irregular Plural Rule for Memorandum
This noun has an irregular plural form that does not follow standard English pluralization rules. Irregular form from corpus
Plural pattern: irregular.
How to Remember the Plural of Memorandum
“memorandum” → “memoranda” is an irregular plural — there is no rule, so memorise the pair as a whole. Try writing it in 3 sentences today.
A common slip-up: mem-OR-an-dum (stressing second syllable instead of third) or 'memrandum' (dropping middle 'o').
Common Plural Mistakes with Memorandum
Wrong: The memorandums were sent to all staff
Correct: The memoranda were sent to all staff
The correct Latin plural is memoranda, not memorandums. Memorandums is informal; memoranda is formal/academic standard
Wrong: I need to send a memoranda about the contract.
Correct: I need to send a memorandum about the contract.
The sentence is correct, but remember: when plural, use memoranda; when you mean the informal version, use memo
How to Pronounce Memorandum and Memoranda
Stress the third syllable: mem-uh-RAN-dum. Do not rush the 'o' sounds—enunciate each vowel clearly
Other Words With the Same Plural Pattern as Memorandum
These nouns follow the same irregular rule. Click any word to see its plural page.
A young boy or girl who is not yet an adult.
the two parts at the bottom of your legs that touch the…
A tiny insect that lives around food and moves very fast.
One of two equal parts that make up something complete.
A grown-up male person. A man is an adult male, not a…
The ability to remember things from the past, or the thought you…
One human; a single individual.
Money that a person earns from their job, paid regularly by their…
Origin and Etymology of Memorandum
From Latin memorandum, neuter gerundive of memorare (to mention, recall) — literally 'that which should be remembered'
Cultural note: Memo is the everyday word; memorandum appears in formal/legal contexts. 'Memorandum of Understanding' (MOU) is a common international agreement format
Frequently Asked Questions About the Plural of Memorandum
What is the plural of “memorandum”?
The plural of “memorandum” is “memoranda”.
Is “memoranda” regular or irregular?
This page classifies it as irregular based on the available plural data.