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cburr eNotes educator| Certified Educator

It is difficult to know what you are looking for with so little information.

IED can stand for Interactive Essential Dynamics, which is a way of analyzing molecules.

The most common current use of IED is for Improvised Explosive Devices, which have caused so many US deaths in Iraq.  Typically, these are roadside bombs that are either set off remotely or that detonate when a vehicle passes them.