Until recently, this was the longest word in the Oxford English Dictionary . This is a medical condition more commonly known as miner's lung disease. It is the longest word in Webster's Third New International Dictionary and in the Oxford English Dictionary . This is a portion of the complete chemical name for an enzyme more commonly known as tryptophan synthetase. It is a protein found in milk, thought to induce sleep.
Chemical names fall into the special category of technical jargon.
Smiles is indisputably the longest word in the English language, because there's a mile between the first and last letters. Other Language Stuff . We don't have an exact count, but we know how to find the answer. By counting the number of verb entries on a single page, and multiplying by the number of pages of verbs, one could estimate the total number. O'Connor's page connects to sites with language FAQs, slang experts, grammarians, writing style manuals, and etymology buffs.