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 push message is any notification from a smartphone app that displays while that app is not actively in use. Push messages are common on apps for iPhone and Android, and they frequently appear as pop-up dialogs, banners and small badges on each app's icon. Continue Reading.