What is the X in X-mas?
1660s, "restorative, strengthening" (in medicine), from Greek analeptikos "restorative," from analambanein "to receive, take up in one's hands" (see analemma). Related: Analeptical (1610s).
analeptic an·a·lep·tic (ān'ə-lěp'tĭk)adj. Restorative or stimulating, as a drug or medication. n. A medication used as a central nervous system stimulant.