Objective: Find the longest word, which can be made from concatenation smaller words.
Rules:
* Words (and smaller words inside) must be findable at dictionary.com
* Punctuation (for example ') does not count as part of the smaller word
* No numbers
* Must be done in English
* Must contain at least 3 smaller words
Best:
30 letters:
Pseudopseudohypoparathyroidism
made from the 3 words:
Pseudo, Pseudo , hypoparathyroidism
Answerer: TroyAndAbed