(otorhinolaryngological (22 letters
(immunoelectrophoretically (25 letters
(psychophysicotherapeutics (25 letters
(thyroparathyroidectomized (25 letters
(pneumoencephalographically (26 letters
(radioimmunoelectrophoresis (26 letters
(psychoneuroendocrinological (27 letters
(hepaticocholangiogastrostomy (28 letters
(spectrophotofluorometrically (28 letters
(pseudopseudohypoparathyroidism (30 letters
(supercalafuragialesticexpialadouses (36 letters
(Pneumonoultramicroscopicsilicovolcanoconiosis (45 letters
(immunoelectrophoretically (25 letters
(psychophysicotherapeutics (25 letters
(thyroparathyroidectomized (25 letters
(pneumoencephalographically (26 letters
(radioimmunoelectrophoresis (26 letters
(psychoneuroendocrinological (27 letters
(hepaticocholangiogastrostomy (28 letters
(spectrophotofluorometrically (28 letters
(pseudopseudohypoparathyroidism (30 letters
(supercalafuragialesticexpialadouses (36 letters
(Pneumonoultramicroscopicsilicovolcanoconiosis (45 letters