What is the X in X-mas?
also glycerine, thick, colorless syrup, 1838, from French glycérine, coined by French chemist Michel-Eugène Chevreul (1786-1889), from Greek glykeros "sweet" (see glucose) + chemical ending -ine (2). So called for its sweet taste. Still in popular use, but in chemistry the substance now is known as glycerol.
glycerin glyc·er·in or glyc·er·ine (glĭs'ər-ĭn)
Glycerol or a preparation of glycerol.
|glycerin also glycerine |