definition

US /ˌdef.ɪˈnɪʃ.ən/
UK /ˌdef.ɪˈnɪʃ.ən/
"definition" picture
1.

a statement of the exact meaning of a word, phrase, or term

:
Look up the definition of 'ephemeral' in the dictionary.
The legal definition of assault varies by jurisdiction.
2.

the degree of distinctness in outline of an object, image, or sound

:
The high-resolution screen provides excellent image definition.
The sculptor achieved remarkable muscle definition in the statue.