<p><strong>Adjective</strong></p><ul><li>Belonging or pertaining to the rodent subfamily Murinae, which includes more than 500 species of mice and rats: pathological studies of murine viruses; the detection of murine odor in the attic.</li></ul><p><strong>Noun</strong></p><ul><li>A murine rodent: No murines have played more vitally important roles in medical research than common house mice and brown rats.</li></ul>