Full Idea
Frege (according to Quine) characterises analytic truths as those that can be demonstrated or proved using only logical laws and definitions as premises.
Gist of Idea
Analytic truths are those that can be demonstrated using only logic and definitions
Source
report of Gottlob Frege (works [1890]) by Alexander Miller - Philosophy of Language 4.2
Book Reference
Miller,Alexander: 'Philosophy of Language' [UCL Press 1998], p.116
A Reaction
This is the big shift away from the Kantian version (predicate contained in the subject) towards a modern version, perhaps fixed by a truth table giving true for all values.