1. Multiple independently targeted re-entry vehicle (a type of missile)

Encyclopedia: MIRV

• pertinacity
• pertinence
• pertinency
• pertinent
• pertinently
• pertly
• pertness
• perturb
• strong-growing
• strong-minded
• strong-scented
• strong-smelling
• strong-willed
• strongbox
• stronghold
• strongly
• strongman
• strongroom
• Strongylodon
• Strongylodon macrobotrys
• strontia
• strontianite
• strontium
• strontium 90
• strop