When a word is defined by its use in sentence what it called?

When a word is defined by its use in a sentence, it's called definition by example.

This is a type of definition that relies on showing how the word is used in a particular context, rather than providing a formal dictionary-style definition.

Here are some other terms you might come across that relate to this concept:

* Contextual definition: This refers to the meaning of a word as it is used in a specific context.

* Operational definition: This is a definition that defines a concept by specifying the operations used to measure it.

Let me know if you have any other questions!