Metamers
From The Glossary of Digital Photography
(1) Occasionally used as another term for metamerism. (2) Two color samples that appear the same under certain lighting conditions but different under other lighting conditions. See metamerism

ONLINE GLOSSARY OF DIGITAL PHOTOGRAPY
(1) Occasionally used as another term for metamerism. (2) Two color samples that appear the same under certain lighting conditions but different under other lighting conditions. See metamerism