∫
Definition from Wiktionary, the free dictionary
Character  ∫  

Unicode name  INTEGRAL  
Code point  U+222B  
Unicode block  Mathematical Operators  
LaTeX input  \int 


Translingual[edit]
Etymology[edit]
Gottfried Leibniz based the symbol on the Latin word summa (“sum”), which he wrote ſumma (with a long s 'ſ' ). This use first appeared publicly in his paper De Geometria, published in Acta Eruditorum of June, 1686,^{[1]} but he had been using it in private manuscripts since at least 1675.^{[2]}
Symbol[edit]
∫
 (mathematics) Denotes the integral