U.S. Marine Corps Dictionary


A Vietnam-era fighting vehicle that looked like a small tank with six externally mounted 105mm recoilless rifles attached. Ammunition and a loader were carried inside but he had to get out to load the tubes. When all six rifles were fired, at the same time the Ontos would stand up on its hind section. (origin) The word is reportedly Greek for “thing”.

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DevilDogCorps.com is an unofficial online dictionary of terms and acronyms commonly used within the United States Marine Corps.