What is the X in X-mas?
early 15c., from Middle French desiccation or directly from Late Latin desiccationem (nominative desiccatio), noun of action from past participle stem of Latin desiccare "to make very dry," from de- "thoroughly" + siccare "to dry" (see siccative).
desiccation des·ic·ca·tion (děs'ĭ-kā'shən)
The process of being desiccated.
desiccate des·ic·cate (děs'ĭ-kāt')
v. des·ic·cat·ed, des·ic·cat·ing, des·ic·cates
To dry thoroughly; render free from moisture.
To remove the moisture from something or dry it thoroughly. ◇ A desiccator is a container that removes moisture from the air within it. ◇ A desiccator contains a desiccant, a substance that traps or absorbs water molecules. Some desiccants include silica gel (silicon dioxide), calcium sulfate (dehydrated gypsum), calcium oxide (calcined lime), synthetic molecular sieves (porous crystalline aluminosilicates), and dried clay.