prin·cip·i·al | \ (ˈ)prin¦sipēəl \

Definition of principial 

2 : of, relating to, or based on principle

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First Known Use of principial

14th century, in the meaning defined at sense 1

History and Etymology for principial

Latin principium beginning + English -al

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The first known use of principial was in the 14th century

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to make amends

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