atom
UK/'ætәm/US
TOEFLA2
Definitions
n.
The smallest unit of a chemical element, consisting of a nucleus surrounded by electrons; any extremely tiny particle or amount
原子；极微小的粒子
Root Breakdown
Root-derivedaprefix
+
tomroot
=atom
Example Sentences
- 1.
An atom is the smallest unit of a chemical element that exists.
- 2.
Scientists studied the structure of atoms using advanced microscopes.