The train between Naples and Sorrento is a very cheap and quick way to travel between the two cities. Unfortunately, it also happens to be one of the worst in terms of pick-pocketing.
Definition of Element. 1) A substance that cannot be decomposed into simpler substances by chemical means. 2) One of the 116 presently known substances that cannot be decomposed by chemical reaction into a simpler substance. Elements comprise all matter at and above the atomic level.
Noun. 1. atom - (physics and chemistry) the smallest component of an element having the chemical properties of the element. substance-the real physical matter of which a person or thing consists; DNA is the substance of our genes.