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.
The paired TED talk
Go ahead, make up new words! (2014), the TED talk by Erin McKean.