What does the prefix multi- mean?
Multi- comes from the Latin multus, which means "much" or "many". It shows plurality: more than one, and usually quite a few.

Prefix · many / multiple
Signals many or multiple: multiply, multicultural, multimedia, multitask, multilingual.
Written by Bryan López, English teacher · Updated
Multi- comes from the Latin multus, which means "much" or "many". It shows plurality: more than one, and usually quite a few.
Both mean "many", but they have different origins: multi- comes from Latin and poly- from Greek. The difference is not in the meaning, but in the field where they are used. In more formal science poly- is usually preferred, and in business and technology language multi- is preferred. If you want to create a word, notice which one is used in the same setting.
Attaches to nouns and adjectives:
Pronunciation: /ˈmʌlti/. In technology, multi- is especially productive: multiscreen, multiplatform, multiuser.
multi-/ˈmʌlti/
Tap the button to hear how the prefix sounds. Each word in the table has its own audio.
The term "multitasking" comes from computing. Applied to humans, neuroscience shows that what we call "multitasking" is actually "task-switching" — rapid refocusing — which reduces efficiency and quality in both tasks.
"Multilingual" = communicating in more than one language (neutral, broad). "Polyglot" typically implies advanced proficiency in several languages (usually three or more) and carries a stronger connotation of linguistic skill. A country can be "multilingual"; a person who masters six languages might be called "a polyglot."
A trick to remember it
Think of multitasking, doing many things at once: multi- = many. multiply, multitask.
Exercise 1 · Form the word
Exercise 2 · Pick the right one
"Research shows that ___ actually reduces productivity because the brain switches focus rapidly between tasks."
Exercise 3 · Pick the right one
What is the difference between "multilingual" and "polyglot"?
The prefix multi- signals many or multiple: multiply, multicultural, multimedia, multitask, multilingual.
The prefix multi- is pronounced /ˈmʌlti/. For example, "multitask".
"task" becomes "multitask". It is a typical example of the multi- prefix.
un-, re-, pre-, dis-, over-, in-... every beginning you need to unlock thousands of English words at once.