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.
button verb [I or T]. âº to âfasten something, usually a âpiece of âclothing, using buttons: Button (up) âyour âcoat, it's âcold âoutside. Idioms. button it. (Definition of button from the Cambridge Advanced Learners Dictionary & Thesaurus Â© Cambridge University Press).