ˈspinər, -ˌnȯ(ə)r noun
( -s )
Etymology: spin (I) + -or
: a quantity that resembles a vector with complex components in two- or four-dimensional space with complex coordinates and that is used especially in the mathematics of the theory of relativity
the geometrical picture of a two-component spinor requires two plane vectors … and these may be of arbitrary lengths and inclined to each other at any angle — Scientific Monthly