trilinear

adjective
tri·​lin·​e·​ar | \(ˌ)trī-ˈli-nē-ər \

Definition of trilinear 

: of, relating to, or involving three lines trilinear coordinates

First Known Use of trilinear

1715, in the meaning defined above

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Dictionary Entries near trilinear

trilemma

trilete

trilevel

trilinear

trilineate

trilingual

Trilisa

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The first known use of trilinear was in 1715

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