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.
push verb (MOVE WITH FORCE) B1 [ I or T, usually + adv/prep ] to move forcefully, especially in order to cause someone or something that is in your way to move, so that you can go through or past them: Stop pushing - wait your turn.