Physics can be defined as the science of matter, motion, and energy.
Agriculture is defined as the cultivation of soil for growing crops.
Genius has been defined as a supreme capacity for taking trouble.
Some words are hard to define.
It is hard, perhaps even impossible, to define normal sensory perception.
In mathematics, a straight line is defined by two points.
A dictionary defines words.
I will define happiness as this.
To give a definition of a word is more difficult than to give an illustration of its usage.
The word 'excessive competition' is frequently used in Japanese industry, but there is not a precise definition of the practice.
Can you give me the definition of a cone?
If I had to define life in a word, it would be: Life is creation.
Boxing has been defined as the art of hitting without being hit.
Above all, logic requires precise definitions.
Above all, scientific terms call for precise definitions.
Instead, I will turn to a discussion of the two economic variables I defined a moment ago.
Can you clearly define this word?
How would you define "happiness"?
It is hard to define "triangle."