nuclear option noun2 •In resolving a problem, the possible course of action that is considered the most extreme because of its collateral consequences.Mr. Storey said his “nuclear option” was moving to Ocean Drive and living in his house full time, but that, too, came with obvious risks. — 2022 •(US) A procedure by which the United States Senate can decide any issue with a simple majority, rather than the usual supermajority.So now that the Republicans have used the nuclear option to kill the poor filibuster to clear the way for the elevation of Judge Neil Gorsuch to the Supreme Court, we can lose perspective. — 2017 formsnuclear options