principal argument

American  

noun

Mathematics.

1. the radian measure of the argument between −π and π of a complex number.

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Example Sentences

Oz’s energetic campaigning has been his principal argument for himself.

From Washington Post

The ad was meant to undermine Herrell’s principal argument in a three-person Republican primary that she is the most stalwart supporter of Trump.

From Washington Times

The ad was meant to undermine Herrell’s principal argument in a three-person Republican primary that she is the strongest supporter of Trump.

From Washington Times

Electability has been Biden’s principal argument in claiming to be at least a nominal front-runner.

From Washington Post

Philbin was addressing the second article of impeachment, obstruction of Congress, and his principal argument to the Senate was that the House must exhaust all efforts to enforce its subpoenas in the courts before it can impeach the president.

From Slate