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nonstoichiometric
nonstop
nonstore retailing
nonstriker
nonsuit
nontarget
nontariff barrier
nonterminating
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nontradables
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nonunion
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nonverbal communication
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nonreturn
non·re·turn [ nòn ri túrn ]


adjective 
Definition:
 
permitting flow in only one direction: permitting a flow of air or liquid through a pipe or similar conduit in one direction only
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