1) Absence of a reflex 2) Symptom 
Absence of reflexes. ... Detrusor areflexia, a failure of the detrusor muscle to have a reflex contraction even though the bladder has reached or exceeded its capacity. ... (05 Mar 2000) ... 
(a″re-flek´se-ә) absence of the reflexes. detrusor areflexia absence of contractions of the detrusor muscles of the urinary bladder.
Type: Term Pronunciation: ā′rē-flek′sē-ă Definitions: 1. Absence of reflexes.
Areflexia: Absence of neurologic reflexes such as the knee jerk reaction.
[n] - absence of a reflex
noun absence of a reflex; a sign of possible nerve damage