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.
Full Definition of PUSH. transitive verb. 1. a: to press against with force in order to drive or impel b: to move or endeavor to move away or ahead by steady pressure without striking.