From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( n.) Change of form by chemical agency; decomposition; resolution.

(2): ( n.) The dispersion of an assembly by terminating its sessions; the breaking up of a partnership.

(3): ( n.) Change from a solid to a fluid state; solution by heat or moisture; liquefaction; melting.

(4): ( n.) The act of dissolving, sundering, or separating into component parts; separation.

(5): ( n.) The extinction of life in the human body; separation of the soul from the body; death.

(6): ( n.) Destruction of anything by the separation of its parts; ruin.

(7): ( n.) Corruption of morals; dissipation; dissoluteness.

(8): ( n.) The state of being dissolved, or of undergoing liquefaction.

(9): ( n.) The new product formed by dissolving a body; a solution.

Charles Buck Theological Dictionary [2]

Death, or the separation of the body and soul. The dissolution of the world is an awful event, which we have reason to believe, both from the Old Testament and the New, will certainly take place.

1. It is not an incredible thing, since nothing of a material nature is formed for perpetual duration.

2. It will doubtless be under the direction of the Supreme Being, as its creation was.

3. The soul of man will remain unhurt amidst this general desolation.

4. It will be an introduction to a greater and nobler system in the government of God,  2 Peter 3:13 .

5. The consideration of it ought to have a great influence on us while in the present state,  2 Peter 3:11-12 .