Full Idea
From a logical point of view all definitions look exactly alike, that is, they contain a logical subject and a set of predicates which are attributed of necessity to that subject.
Gist of Idea
Logically, definitions have a subject, and a set of necessary predicates
Source
Harré,R./Madden,E.H. (Causal Powers [1975], 1.IV)
Book Reference
Harré,R/Madden,E.H.: 'Causal Powers: A Theory of Natural Necessity' [Blackwell 1975], p.18