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Full Idea
In 'X is true iff p' if we replace X by the name of a sentence and p by a particular sentence this can be considered a partial definition of truth. The whole definition has to be ...a logical conjunction of all these partial definitions.
Gist of Idea
Each interpreted T-sentence is a partial definition of truth; the whole definition is their conjunction
Source
Alfred Tarski (The Semantic Conception of Truth [1944], 04)
Book Ref
'Semantics and the Philosophy of Language', ed/tr. Linsky,Leonard [University of Illinois 1972], p.16
A Reaction
This seems an unprecedented and odd way to define something. Define 'red' by '"This tomato is red" iff this tomato is red', etc? Define 'stone' by collecting together all the stones? The complex T-sentences are infinite in number.
Related Idea
Idea 19096 Disquotationalism resembles a telephone directory [Misak]