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 button. noun. 1. an electrical switch operated by pressing a button, which closes or opens a circuit. 2. (modifier) push-button. operated by a push button: a push-button radio. initiated as simply as by pressing a button: push-button warfare.