Definition of "quaternions" []

• Plural form of quaternion. (noun)

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• "This isn't just an academic exercise though; a different system devised by Hamilton, called quaternions, evolved into the vector algebra that is now used extensively by physicists to describe the real world in another way."
• "The Irish mathematician William Rowan Hamilton, finding himself on a walk without a pencil when his life's great discovery occurred to him, scratched the formula for quaternions on a stone bridge with a nail."
• "You have to give up commutativity to get the quaternions."