spinor

[ spin-er ]
/ ˈspɪn ər /

noun Mathematics, Physics.

a quantity resembling a vector or tensor that is used in physics to represent the spins of fermions.

Origin of spinor

1930–35; equivalent to spin + -or2, as in vector, tensor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019