What's the difference between MDO and MDF?

I’ve seen you use MDF in projects and jigs many times in WOOD® magazine. Then I heard on a TV remodeling show about something called MDO. What’s that?

What's the difference between MDO and MDF?

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What is the difference between plywood and MDF? - Quora

What's the difference between MDO and MDF?

What's the difference between MDO and MDF?

MDF goes on a diet

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Wooden Boards: Differences Between MDF, MDP, Plywood, and OSB

MDO vs MDF: Strong Constructive Outlook On The Plywood To Be Chosen

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