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.
Traditionally a push button is clicked using the mouse button. However, the push button can also be pressed using the keyboard. To press a button using the keyboard press the tab key until the button is highlighted and then press the space bar. In the above example, the Save button is highlighted so pressing the space bar would open a Save window.