Which term describes munitions that have been intentionally discarded?

The term that accurately describes munitions that have been intentionally discarded is "Discarded Military Munitions." This terminology is used specifically for those munitions that are no longer intended for use and have been disposed of by the military. This can include items that have been removed from service due to being surplus, unneeded, or unsafe. The focus here is on the deliberate act of disposal, which distinguishes these munitions from others that may still be active or in situ but have failed to detonate, among other possibilities.

In contrast, Unexploded Ordnance refers to munitions that were used but did not detonate upon impact; Defunct Ordnance typically refers to munitions that cannot be used anymore, although they might not specifically indicate they were disposed of; and Inactive Munitions suggests items that are not currently live but may not have undergone the process of discard. Thus, the specificity of the terminology regarding intentional discarding aligns best with the correct answer.