What is the X in X-mas?
1570s, from re- "back, again" + plant (v.). Related: Replanted; replanting.
replant re·plant (rē-plānt')v. re·plant·ed, re·plant·ing, re·plants To reattach an organ, limb, or other body part surgically to the original site. n. (rē'plānt') An organ, limb, or body part that has been replanted.