The Oxford essential dictionary of new words
The Oxford essential dictionary of new words by Erin McKean is a 2003 Education book written by TED speaker Erin McKean, paired here with the talk they gave.
A definition is a semantic statement of the meaning of a term. Definitions can be classified into two large categories: intensional definitions, and extensional definitions. Another important category of definitions is the class of ostensive definitions, which convey the meaning of a term by pointing out examples. A term may have many different senses and multiple meanings, and thus require multiple definitions.