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Prefix · across / through

trans-

Signals crossing, transformation, or movement through: transport, transform, translate, transfer.

Basic

Written by Bryan López, English teacher · Updated

What does the prefix trans- mean?

Trans- comes from the Latin trans, which means "across" or "on the other side". It shows movement across something, or going from one state to another. The central idea is always crossing, carrying or changing sides.

Trans- also means changing state

Beyond physical movement, trans- shows a deep change of form or condition. In those words there is always a clearly different "before" and "after": something goes from being one thing to being another. If you see trans- next to a verb, ask yourself what crosses and what changes.

How it is used

Attaches to verbs and nouns with no spelling change:

  • trans- + verb
    port → transportform → transformlate → translatefer → transfermit → transmit
  • trans- + noun
    plant → transplantaction → transactionition → transitionscript → transcript

Pronunciation: /træns/, with a short "a" as in "cat."

How it is pronounced

trans-/træns/

Tap the button to hear how the prefix sounds. Each word in the table has its own audio.

Examples

  • porttransportThe city needs to invest more in public transport.
  • formtransformThe renovation transformed the old warehouse into a gallery.
  • latetranslateShe spent three years translating the novel into English.
  • fertransferThe biologist had to transfer the cells to a new medium.
  • planttransplantThe surgeon performed a successful kidney transplant last week.
  • actiontransactionEvery transaction on the platform is encrypted and logged.
  • itiontransitionThe transition from school to university can feel overwhelming.

Common mistakes

translate and transport both just mean "carry" — so they are similar
translate = carry meaning between languages; transport = move things physically through space

Although both etymologically mean "carry across," in modern English they are completely separate: translate = linguistic conversion; transport = physical movement. They are not interchangeable.

transfer has the same stress as a noun and verb
transfer: noun = /ˈtrænsfer/ (stress on first); verb = /trænsˈfɜːr/ (stress on second)

"A TRANSfer" (noun) vs "to transFER" (verb). This stress shift is a common English pattern shared by: record, permit, present, contest, and many others.

A trick to remember it

Picture crossing a bridge from one side to the other: trans- = across. transport, transform.

Practise what you learned

Exercise 1 · Form the word

The biologist needed to ___ the cells to a new culture medium before they became damaged.

Hint: trans- + fer = ?

Exercise 2 · Pick the right one

"The caterpillar ___ into a butterfly over several weeks inside the cocoon."

Exercise 3 · Pick the right one

What is the correct stress on "transfer" as a noun?

Frequently asked questions

What does the prefix trans- mean in English?

The prefix trans- signals crossing, transformation, or movement through: transport, transform, translate, transfer.

How do you pronounce trans-?

The prefix trans- is pronounced /træns/. For example, "transport".

Can you give an example of a word with trans-?

"port" becomes "transport". It is a typical example of the trans- prefix.

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