We don't have synonyms for eigenvectors yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are eigenvector.
(n) :
(linear algebra) A vector that is only scaled (not rotated out of its span) under a particular linear transformation; a left or right eigenvector depending on context; (more formally) given a linear transformation A, a vector x such that Ax=λx [or xA=λx] for some scalar λ (called the eigenvalue).
(n) :
(physics, engineering) A right eigenvector; given a matrix A, the eigenvector of the transformation "left-side multiplication by A."
(n) :
(linear algebra) A vector that is only scaled (not rotated out of its span) under a particular linear transformation; a left or right eigenvector depending on context; (more formally) given a linear transformation A, a vector x such that Ax=λx [or xA=λx] for some scalar λ (called the eigenvalue).
(n) :
(physics, engineering) A right eigenvector; given a matrix A, the eigenvector of the transformation "left-side multiplication by A."