Dictionary

residuum

noun re·sid·u·um \ri-ˈzi-jə-wəm\
plural re·sid·ua \-wə\

Definition of RESIDUUM

:  something residual: as
a :  residue a
b :  a residual product (as from the distillation of petroleum)

Examples of RESIDUUM

  1. <even highly decaffeinated coffee contains a tiny residuum of caffeine>

Origin of RESIDUUM

Latin
First Known Use: 1672

residuum

noun re·sid·u·um \ri-ˈzij-ə-wəm\   (Medical Dictionary)
plural re·sid·ua \-ə-wə\ also residuums

Medical Definition of RESIDUUM

:  something that remains; especially :  residual 2

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