Retracted tympanic membrane abnormal tympanic membrane morphology tympanic membrane retraction 2017-11-17T12:19:18Z retracted eardrum a condition in which a segment of the tympanic membrane (eardrum) collapses inwards towards the middle ear space and lies more medially (deeper) than its normal position; the retracted segment is often known as a retraction pocket retracted tympanic membrane eardrum retraction MPheno.ontology MP:0030413 retracted tympanic membrane; tympanic membrane retraction