What is the definition for the word rupture?

The Word ending -rrhexis from Gr. rhexis, breaking, means "a bursting, a rupture, a breaking". [amniorrhexis, lit. amniotic (membrane) bursting, anarrhexis, lit. breaking again, hepatorrhexis, lit. liver rupture, rhexis, lit. bursting or rupture condition] [] (rel. to rhagadi-, -rrhag-, rhegma-)

Here's a mnemonic to remember its meaning:

rhex-, -rrhexis You're Sid from the movie Toy Story and you're watching the slow motion film of a Tryannosaurus Rex (rhex-, -rrhexis) as it's beginning to fracture, then rupture, and finally burst apart. It's cool to watch what a cherry bomb will do to a plastic toy.