What is the longest word and What is its definition?
Dichlorodiphenyltrichloroethane, one of the most well-known synthetic pesticides.Other long words include:electroencephalographicallyoctamethylpyrophosphoramideethylenediaminetetraaceticlaryngotracheobronchitidesmeningoencephalomyelitidespneumoencephalographicallyelectrocorticographicallyelectroencephalographicalimmunoelectrophoreticallypanhysterosalpingectomiessyngenesiotransplantationtetrabromophenolphthaleinureteropyelonephrostomiesventriculocisternostomiescholangiopancreatographycholecystoduodenostomieselectrocardiographicallyelectroencephalographieshysterotrachelorrhaphieslaryngotracheobronchitislymphangioendotheliomatamediastinopericarditidespancreaticoenterostomiespancreaticogastrostomiespancreaticojejunostomiespneumoencephalographicalpolioencephalomyelitidespseudohypoparathyroidismthyroparathyroidectomies