An ostensive definition conveys the meaning of a term by pointing out examples.
From the en.wikipedia.org
Let us first consider a case of ostensive definition in a public language.
From the en.wikipedia.org
Early in The Investigations, Wittgenstein attacks the usefulness of ostensive definition.
From the en.wikipedia.org
One important form of the extensional definition is ostensive definition.
From the en.wikipedia.org
The process of ostensive definition itself was critically appraised by Ludwig Wittgenstein.
From the en.wikipedia.org
We can justify our use of the new name T by making the ostensive definition more or less explicit.
From the en.wikipedia.org
An everyday ostensive definition is embedded in a public language, and so in the form of life in which that language occurs.
From the en.wikipedia.org
One conclusion of this is that to participate in an ostensive definition presupposes an understanding of the process and context involved, of the form of life.
From the en.wikipedia.org
Wittgenstein argues for this making a series of moves to show that to understand an ostensive definition presupposes an understanding of the way the word being defined is used.