Transpire: Meaning and Usage
“Transpire” has several established meanings. In formal general English it can mean that a previously unknown fact becomes known, and dictionaries also record the broader sense “happen.” In biology it can mean losing water through a surface or skin.
“Transpire” can mean “become known” or, formally, “happen”; in biology it refers to water loss through a surface. Use the surrounding grammar and subject matter to make the sense clear.
Key details
Choose the right form
| Context | Likely sense | Clearer alternative when needed |
|---|---|---|
| it transpired that … | became known | it emerged / it became known |
| event transpired | happened, formal | happened / occurred |
| plant or body transpired | lost water through a surface | retain the technical verb when appropriate |
Quick tests
Sense test
Would a reader know whether you mean “became known,” “happened,” or the biological process?
If yes: “Transpire” can be used in its established sense.
If no: Choose a more explicit verb to avoid ambiguity.
Caveat: The “happen” sense is recorded and should not be dismissed categorically as an error.
Examples
It transpired that the figures had been copied from an older report.
The pattern means the fact became known.
Several changes transpired during the negotiations.
This uses the formal “happened” sense; “occurred” would be more direct if clarity is the priority.
Further guidance
Become Known
A common formal pattern is “it transpired that…,” introducing information that became known.
Biology Sense
In biology, plants or bodies can transpire by losing water through their surface or skin.
Happen Sense
Major dictionaries also record “transpire” meaning “happen,” so that use should not be labeled categorically incorrect.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Transpire — English meaning (opens in a new tab)Cambridge University Press · Dictionary meanings of “transpire,” including become known, happen, and biological water loss