tamisageMath.|ˈtæmɪsɪdʒ| [ad. F. tamisage sifting: see tamis and -age.] Applied by Sylvester to a method of finding invariants. 1882Cayley Math. Papers XI. 409 heading, Note on an exceptional case in which the Fundamental Postulate of Professor Sylvester's theory of Tamisage fails.