An atom is the tiny part that makes up everything around us. It is the basic building block of all materials.
An atom is very small and hard to see.
Water has oxygen and hydrogen atoms.
In physics, atom can mean a very small unit of energy or matter. This idea comes from the word's original meaning of something that cannot be divided.
The smallest atom of energy is called a quantum.
Each atom of light carries energy.
Atom is sometimes used in everyday speech to mean a very small or tiny amount of something. It often shows something is almost not there.
I don’t have an atom of money left.
She didn’t show an atom of fear.
Atom is sometimes seen as a name or brand for products, companies, or technology. This is a proper noun use, not a general word meaning.
Atom makes strong electric cars.
I bought an Atom product yesterday.
In computer science, an atom is a piece of data that acts as a unique name or value. It is often used in programming languages like Lisp.
The system uses atoms to store names.
Each atom is unique in the program.
In historical or informal speech, 'atom' can refer to an atomic bomb, a powerful nuclear weapon. This usage connects the word to war and energy.
They feared the atom in the 1940s.
The atom changed war forever.
