mitral /ˈmaɪtɹəl/ adjective2 •Pertaining to a mitre; resembling a mitre.The mitral valve was named for a fancied resemblance to a bishop's mitre. •Pertaining to the mitral valve.Treatments for mitral insufficiency include antihypertensives and valvular surgery; today the latter is often minimally invasive and even totally endoscopic.