<p><strong>Verb</strong></p><ul><li><p>(used with object)</p><ul><li>to render sensitive.</li><li>to render (a film or the like) sensitive to light or other forms of radiant energy.</li><li>to render sensitive to an antigenic substance.</li></ul></li><li><p>(used without object)</p><ul><li>to become sensitized.</li></ul></li></ul>