English

Definition of residuum noun from the Oxford Advanced Learner's Dictionary

 

residuum

 noun
noun
BrE BrE//rɪˈzɪdjuəm//
 
; NAmE NAmE//rɪˈzɪdjuəm//
 
(pl. residua
BrE BrE//rɪˈzɪdjuə//
 
; NAmE NAmE//rɪˈzɪdjuə//
 
)
(specialist)
 
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something that remains after a reaction or process has taken place Word Origin late 17th cent.: from Latin, neuter of residuus ‘remaining’, from the verb residere.
See the Oxford Advanced American Dictionary entry: residuum