Dictionary
The American Heritage Dictionary provides clear and precise definitions along with an authoritative guide to usage. You can also check a word's spelling,
On this page: position paper to postcranial.
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positivism (in philosophy)
positron emission tomography (in medicine, chemistry)
possessed (Rock Band)
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Post Exchange (service mark)
post office (in government, communication)
post- (prefix)
Post-It (trademark for a slip)
postage stamp (material)
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