Meanings
nounKleene plus (plural Kleene pluses)
plural Kleene pluses
- computingThe plus symbol, +, used as an operator to concatenate one or more strings from a given set, widely used in regular expressions.
Origin
After Stephen Cole Kleene (1909-1994), American mathematician.
Full word history & related roots →Cite this entry
APA
Kleene plus. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/Kleene%20plus
MLA
“Kleene plus.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Kleene%20plus. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “Kleene plus,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/Kleene%20plus.
Source: Kleene plus on Wiktionary, CC BY-SA 4.0.