Full Idea
The conjunction of properties associated with a term such as "lemon" is often called the intension of the term "lemon".
Gist of Idea
The intension of "lemon" is the conjunction of properties associated with it
Source
Stephen P. Schwartz (Intro to Naming,Necessity and Natural Kinds [1977], §II)
Book Reference
'Naming, Necessity, and Natural Kinds', ed/tr. Schwartz,Stephen P. [Cornell 1979], p.14
A Reaction
The extension of "lemon" is the set of all lemons. At last, a clear explanation of the word 'intension'! The debate becomes clear - over whether the terms of a language are used in reference to ideas of properties (and substances?), or to external items.