Lecture 7 Types of Definitions Sept 23 , 2013
Intensional Definitions: Assigns a meaning to a term by listing the properties or attributes
shared by all the objects that are denoted (be a sign of, indicate) by the term.
Words in a different language:
Ex: ‘Inu’ (in Japanese) means dog. The words are
‘Attorney’ means lawyer. synonymous.
Word Origin Definitions
Defines a word by specifying the intension of that word, or its constituents, that it connoted
when it was introduced.
Ex: ‘Philosophy’ means love, ‘philo’, of wisdom, ‘sophia’. (You are going back to how
it was originally introduced.)
‘Karaoke’ means empty orchestra. ‘Kara’ means empty and ‘oke’ is a short-form
English word for ‘orchestra’. Similarly, ‘karate’ means ‘empty hand’. (Explaining
the constituents of the word as it was introduced.)
Definitions by Genus and Difference
Species term is defined – a group. Assigns a meaning to a term (the species) by establishing a
genus and combining it with the attribute that distinguishes the members of that species.
Genus is a larger group than the species. When a species