The title page of the Shakespeare First Folio, 1623. The term folio, from the Latin folium (leaf), has three interconnected but distinct meanings in the world of books and printing. It is firstly a term for a common method of arranging sheets of paper into book form, folding the sheet only once, and a term for a book made in this way.
Quick Answer. Symptoms of a burning or burn on the tongue include pain, redness and swelling, notes Healthline. More severe burns can result in blisters and even blackened skin. Those with burning tongue syndrome experience the burning pain associated with a tongue burn, but without the hot food or drink that causes it.
Burning mouth syndrome causes a painful burning sensation on the tongue or in the mouth. Learn more about the potential causes in this article.