<p><strong>Adjective</strong></p><ul><li>Psychiatry. Relating to, having, or experiencing hypochondria, an excessive preoccupation with or anxiety about one's health.</li><li>Produced by an excessive preoccupation with or anxiety about one's health: Hypochondriac feelings overwhelmed her.</li><li>Exhibiting excessive worry about one's health: Her hypochondriac roommate had been convinced that their apartment was killing them with black mold.</li><li>Anatomy, Zoology. Of or relating to the hypochondrium.</li></ul><p><strong>Noun</strong></p><ul><li>Psychiatry. A person experiencing or subject to hypochondria.</li><li>A person who worries or talks excessively about their health.</li></ul>