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.
A custom button is a push button that you can add to the Google Toolbar that can have custom navigation, search, send and update capabilities. Notably, a custom search button can use most any website's search engine, not just Google's.