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.
pushing. 1  1 : to press against with force so as to drive or move away He helped push a car out of the snow. 2  2 : to force forward, downward, or outward The tree is pushing its roots deep in the soil. 3  3 : to go or make go ahead I had to push to finish the swim.