Vitamin A deficiency: Related Medical Conditions. To research the causes of Vitamin A deficiency, consider researching the causes of these these diseases that may be similar, or associated with Vitamin A deficiency:
Definition of push button. : a small button or knob that when pushed operates something especially by closing an electric circuit.
operated by or as if by push buttons: push-button tuning. 2. using complex, automated weapons, as long-range missiles, that require only simple initial steps to put them into action: push-button warfare. Origin of push-button.