laps-, lab-

1. A slippage or sinking of a body organ or part; such as, a valve of the heart from its usual position.
2. To slip or to fall out of its proper place in the body; prolapsed.
3. A sinking of an organ or other part, especially its appearance at a natural or artificial orifice.
4. Originally in English, "gliding forward".

The falling down or sinking, of a part or viscus, procidentia.

Viscus refers to one of the organs, as the brain, heart, or stomach, in the great cavities of the body of an animal; especially used in the plural, and applied to the organs contained in the abdomen.

Procidentia refers to falling down; a prolapsus.

1. To fall back into a former mood, state, or way of life; especially, a bad or undesirable one, after coming out of it for a while.
2. To become ill again after seeming to have made a recovery.
3. A return to a former mood, state, or way of life; especially, a bad or undesirable one, after coming out of it for a while.
4. Backsliding; that is, to go back to a bad behavior; to regress, to revert.

The return of signs and symptoms of a disease after a patient has enjoyed a remission. For example, after treatment a patient with cancer of the colon went into remission with no sign or symptom of the tumor, remained in remission for four years, but then suffered a relapse and had to be treated once again for colon cancer.

Someone who has slipped back into a bad habit.

In theology, one of that class of Calvinists who believed that God's decree of election determined that man should fall, in order that the opportunity might be given for securing the redemption of a part of the human race, the decree of salvation being conceived of as formed before or beyond, and not after or following, the lapse, or fall.

The doctrine, belief, or principles of the Supralapsarians.