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What does PROTO stand for? 

What does PROTO mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: PROTO.

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PROTO

Prototype

Governmental » Military

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PROTO

Private Rocket To Orbit Tiny Objects

Governmental » NASA

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PROTO

Primeval Research of Truth Objects

Miscellaneous » Unclassified

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What does PROTO mean?

proto(a)(adj)
indicating the first or earliest or original

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    • A. Stock Market Hours
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