18 Letter Words

18 letter words can help you generate the perfect word list. Whether you're looking to make a vocabulary list, looking for the perfect rhyme, or just trying to keep your kids busy, this is the way to go. (Just make them read the whole list. It'll keep them seated.)

18 letter words
aerothermodynamics
anticholinesterase
ballistocardiogram
bioinstrumentation
chlorofluorocarbon
coccidioidomycosis
counterprogramming
counterreformation
deinstitutionalize
diethylstilbestrol
electrocardiograph
electrodynamometer
establishmentarian
evapotranspiration
glomerulonephritis
hemidemisemiquaver
histocompatibility
immunofluorescence
lipopolysaccharide
microencapsulation
mucopolysaccharide
neuroendocrinology
nonconfrontational
phytohemagglutinin
psychopharmacology
psychotherapeutics
thermoluminescence
thiruvananthapuram
transubstantiation