Which preposition requires 'definition'?

[Sidle Jinks]

Hello everybody!

The question is: which preposition requires word definition - definition for something or definition of something?

I have heard both forms, so which is correct, or both?

Thank you in advance for all your answers.
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Factum non fabula

[napoleon_hill_fan]

I think the word definition can require both prepositions but definition of is far more common. Just my opinion though...
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All achievements, all earned riches, have their beginning in an idea.

[Sidle Jinks]

Thank you very much for your comments! Of course, the word!
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Factum non fabula

[napoleon_hill_fan]

Your welcome. How are things in the Ukraine ?
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All achievements, all earned riches, have their beginning in an idea.