desk officer
- n a military officer who is not assigned to active duty
defibrillator
- n an electronic device that administers an electric shock of preset voltage to the heart through the chest wall in an attempt to restore the normal rhythm of the heart during ventricular fibrillation
deficiency
- n the state of needing something that is absent or unavailable
water is the critical deficiency in desert regions - n lack of an adequate quantity or number