TITLE: What is this symbol $\int$ called?
QUESTION [10 upvotes]: Title says it all (I think). I'm betting it's something to do with Standard Integrals though. What is this symbol "$\int$" called?

REPLY [4 votes]: This (physics) book (p. 49) says: "The integral sign, called summa, $\int$, [...]" (their emphasis), which, surprisingly, hasn't yet been suggested (although one answer got tantalisingly close).