Medical Dictionary
atypical
adj atyp·i·cal \(ˈ)ā-ˈtip-i-kəl\
Medical Definition of ATYPICAL
: not typical : not like the usual or normal type
—atyp·i·cal·ly \(ˈ)ā-ˈtip-i-k(ə-)lē\ adverb
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