What does delimited mean?
"Delimited" is the past tense and past participle of the verb "delimit," meaning to fix or mark precisely the limits or boundaries of something. It is chiefly a formal and technical word: diplomats delimit borders, researchers delimit the scope of a study, and cartographers delimit regions on maps. It also functions as an adjective describing anything whose boundaries are clearly drawn — a delimited area, a delimited set of options. The word has found a natural home in computing, where a "delimited" file (such as a comma-delimited CSV) uses specific characters to separate fields of data. Its tone is precise and authoritative, implying that whatever is being bounded has been defined exactly rather than vaguely. For anyone writing about scope, territory, or data structure, "delimited" offers a sharper alternative to looser words like "defined" or "outlined."
Past tense and past participle of delimit: to determine or mark precisely the boundaries or limits of something.
"The commission delimited the electoral districts after the census."
Almost always used in formal, legal, academic, or technical writing.
Having clear, precisely defined boundaries or scope.
"Each record in the comma-delimited file occupies a single line."
Frequently appears in compound form before nouns, e.g. "tab-delimited" or "space-delimited" in computing.
In computer science, a 'delimited' file is one where fields are separated by markers like commas — so every spreadsheet you've ever opened owes its structure to this precise little word.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of delimited
The verb "delimit" was formed in the early 20th century (attested from around 1904) from the French "délimiter," which itself derives from Latin roots: the prefix de- plus "limitem," meaning boundary or threshold. The Latin noun "limes" (genitive "limitis") gave English both "limit" and its many derivatives, making "delimited" a member of a large word family including "limitation," "sublime" (originally "up to the lintel/boundary"), and "illicit" (literally "not permitted within the bounds"). The prefix de- adds the sense of marking off completely or precisely, distinguishing "delimit" from simply setting a limit.
Related word forms
How delimited is actually used
Mostly formal or technical in register; common in legal, geographic, academic, and computing contexts. In everyday speech people more often say "defined" or "marked off." As a participial adjective it frequently appears before nouns (a delimited area) or in hyphenated compounds (comma-delimited).
Easily confused with delimited
"Delineated" means described or portrayed in detail (often with lines or words), while "delimited" means specifically fixing or marking the exact limits or boundaries of something.