Full Idea
It was proposed that dispositions are second-order properties of objects: the property of having some property.
Gist of Idea
Dispositions are second-order properties, the property of having some property
Source
report of Jackson/Pargetter/Prior (Three theses about dispositions [1982]) by David M. Armstrong - Pref to new 'Materialist Theory' p.xvii
Book Reference
Armstrong,D.M.: 'A Materialist Theory of Mind' [Routledge 1993], p.-7
A Reaction
It seems more plausible to say that dispositions are first-order properties - that is, properties are dispositions, which are causal powers. A disposition to smoke is to have a causal power which leads to smoking.