Full Idea
The possibility of its occurrence in atomic facts is the form of the object.
Gist of Idea
The 'form' of an object is its possible roles in facts
Source
Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], 2.0141)
Book Reference
Wittgenstein,Ludwig: 'Tractatus Logico-Philosophicus (Pears)', ed/tr. Pears,D. /McGuinness,B. [RKP 1961], p.6
A Reaction
Morris says this picks up the idea from Kant. We might now label the 'form' as the 'modal profile' of the object (a phrase I like). The modern issues over transworld identity seem to be a development of this thought.
Related Ideas
Idea 23454 Appearances have a 'form', which indicates a relational order [Kant]
Idea 23471 The structure of an atomic fact is how its objects combine; this possibility is its form [Wittgenstein]