What does truncation mean?
Truncation is the shortening of something by removing part of its beginning, middle, or end. The word is commonly used for the shortening of written or spoken material, but it also has a technical role in computing, mathematics, and related fields. In computing, truncation may mean that data has been deliberately limited to a fixed length, sometimes producing an error when the system expects more information. In geometry, it refers to cutting off part of a figure, especially a vertex. In everyday discussion, truncation often carries a mildly negative implication: a shortened version may remain understandable while losing nuance, evidence, or completeness. It can also be neutral when brevity is intentional, as in database design or constrained communication. The word derives from Latin truncare, meaning “to cut off,” and is related to truncus, “trunk.”
nounThe act of cutting something short or removing part of it, especially text, speech, or data. It can also refer to the shortened or incomplete result.
- The act of shortening something by cutting off part of it.
- A shortened or incomplete version of text, speech, data, or another form of content.
- In mathematics and geometry, the process of cutting off part of a figure, especially one or more of its vertices.
"The truncation of the report made it less useful for anyone seeking a detailed account."
"The editor's truncation of the essay left the argument clear but incomplete."
"Unexpected truncation in the data feed caused the display to show only part of each record."
The plural is used when referring to multiple shortening processes or results.
"The report documents several truncations in the archived text."
Truncation is what happens when a system limits text, speech, or data—and why a suspiciously shortened message can be a sign of both practicality and loss.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does truncation come from?
The word entered English in the early 17th century from the Latin noun truncatio, meaning “a cutting off,” which was derived from truncare, “to cut off.” Truncare was related to truncus, “trunk,” the woody stem of a tree and the source of the English word “trunk.” In English, truncation developed from its general sense of shortening to specialized uses in mathematics, linguistics, and computing.
Related word forms
How truncation is actually used
The word is formal and neutral in general use, though it can suggest an undesirable loss of detail. In computing, mathematics, and linguistics, it is established technical terminology.
Easily confused with truncation
“Truncation” names the process or result of shortening, whereas “truncate” is the verb or adjective describing something that has been shortened.